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38499983 = 131293893
BaseRepresentation
bin1001001011011…
…1011010001111
32200110000001022
42102313122033
534323444413
63453104355
7645146564
oct222673217
980400038
1038499983
111a806675
1210a880bb
137c8cb72
14518286b
1535a7608
hex24b768f

38499983 has 4 divisors (see below), whose sum is σ = 38794008. Its totient is φ = 38205960.

The previous prime is 38499973. The next prime is 38500001. The reversal of 38499983 is 38999483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38999483 = 149926017.

It is a cyclic number.

It is not a de Polignac number, because 38499983 - 212 = 38495887 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 (38499913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146816 + ... + 147077.

It is an arithmetic number, because the mean of its divisors is an integer number (9698502).

Almost surely, 238499983 is an apocalyptic number.

38499983 is a deficient number, since it is larger than the sum of its proper divisors (294025).

38499983 is a wasteful number, since it uses less digits than its factorization.

38499983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294024.

The product of its digits is 1679616, while the sum is 53.

The square root of 38499983 is about 6204.8354530962. The cubic root of 38499983 is about 337.6656211350.

Subtracting 38499983 from its reverse (38999483), we obtain a triangular number (499500 = T999).

The spelling of 38499983 in words is "thirty-eight million, four hundred ninety-nine thousand, nine hundred eighty-three".

Divisors: 1 131 293893 38499983