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29970489 = 39990163
BaseRepresentation
bin111001001010…
…1000000111001
32002101122210010
41302111000321
530133023424
62550212133
7512513343
oct162250071
962348703
1029970489
1115a102aa
12a054049
136294723
143da2293
152970229
hex1c95039

29970489 has 4 divisors (see below), whose sum is σ = 39960656. Its totient is φ = 19980324.

The previous prime is 29970487. The next prime is 29970491. The reversal of 29970489 is 98407992.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (29970487) and next prime (29970491).

It is not a de Polignac number, because 29970489 - 21 = 29970487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29970487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4995079 + ... + 4995084.

It is an arithmetic number, because the mean of its divisors is an integer number (9990164).

Almost surely, 229970489 is an apocalyptic number.

It is an amenable number.

29970489 is a deficient number, since it is larger than the sum of its proper divisors (9990167).

29970489 is an equidigital number, since it uses as much as digits as its factorization.

29970489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9990166.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 29970489 is about 5474.5309388111. The cubic root of 29970489 is about 310.6213310148.

The spelling of 29970489 in words is "twenty-nine million, nine hundred seventy thousand, four hundred eighty-nine".

Divisors: 1 3 9990163 29970489