90492139609 has 8 divisors (see below), whose sum is σ = 92641583232. Its totient is φ = 88344740400.

The previous prime is 90492139607. The next prime is 90492139613. The reversal of 90492139609 is 90693129409.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90492139609 - 2¹ = 90492139607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90492139607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421342 + ... + 598759.

It is an arithmetic number, because the mean of its divisors is an integer number (11580197904).

Almost surely, 2^90492139609 is an apocalyptic number.

It is an amenable number.

90492139609 is a deficient number, since it is larger than the sum of its proper divisors (2149443623).

90492139609 is a wasteful number, since it uses less digits than its factorization.

90492139609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022207.

The product of its (nonzero) digits is 944784, while the sum is 52.

The spelling of 90492139609 in words is "ninety billion, four hundred ninety-two million, one hundred thirty-nine thousand, six hundred nine".