90639241029 has 32 divisors (see below), whose sum is σ = 138264672000. Its totient is φ = 58641630912.

The previous prime is 90639241019. The next prime is 90639241039. The reversal of 90639241029 is 92014293609.

It is a happy number.

90639241029 is a `hidden beast` number, since 9 + 0 + 639 + 2 + 4 + 1 + 0 + 2 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (90639241019) and next prime (90639241039).

It is not a de Polignac number, because 90639241029 - 2⁴ = 90639241013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90639241009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 271992 + ... + 505230.

It is an arithmetic number, because the mean of its divisors is an integer number (4320771000).

Almost surely, 2^90639241029 is an apocalyptic number.

It is an amenable number.

90639241029 is a deficient number, since it is larger than the sum of its proper divisors (47625430971).

90639241029 is a wasteful number, since it uses less digits than its factorization.

90639241029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233674 (or 233668 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 90639241029 in words is "ninety billion, six hundred thirty-nine million, two hundred forty-one thousand, twenty-nine".