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38943149 = 75563307
BaseRepresentation
bin1001010010001…
…1100110101101
32201021111221212
42110203212231
534432140044
63510404205
7652003610
oct224434655
981244855
1038943149
111aa89623
1211060665
1380b67ab
14525a177
153643a9e
hex25239ad

38943149 has 4 divisors (see below), whose sum is σ = 44506464. Its totient is φ = 33379836.

The previous prime is 38943139. The next prime is 38943169. The reversal of 38943149 is 94134983.

38943149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 38943149 - 220 = 37894573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38943139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2781647 + ... + 2781660.

It is an arithmetic number, because the mean of its divisors is an integer number (11126616).

Almost surely, 238943149 is an apocalyptic number.

It is an amenable number.

38943149 is a deficient number, since it is larger than the sum of its proper divisors (5563315).

38943149 is an equidigital number, since it uses as much as digits as its factorization.

38943149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5563314.

The product of its digits is 93312, while the sum is 41.

The square root of 38943149 is about 6240.4446155703. Note that the first 3 decimals coincide. The cubic root of 38943149 is about 338.9562831755.

The spelling of 38943149 in words is "thirty-eight million, nine hundred forty-three thousand, one hundred forty-nine".

Divisors: 1 7 5563307 38943149