90274939893 has 12 divisors (see below), whose sum is σ = 132607257120. Its totient is φ = 59163237096.

The previous prime is 90274939873. The next prime is 90274939919. The reversal of 90274939893 is 39893947209.

90274939893 is a `hidden beast` number, since 90 + 2 + 74 + 9 + 398 + 93 = 666.

It is not a de Polignac number, because 90274939893 - 2²² = 90270745589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90274939893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90274939873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85004121 + ... + 85005182.

It is an arithmetic number, because the mean of its divisors is an integer number (11050604760).

Almost surely, 2^90274939893 is an apocalyptic number.

It is an amenable number.

90274939893 is a deficient number, since it is larger than the sum of its proper divisors (42332317227).

90274939893 is a wasteful number, since it uses less digits than its factorization.

90274939893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170009368 (or 170009365 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 63.

The spelling of 90274939893 in words is "ninety billion, two hundred seventy-four million, nine hundred thirty-nine thousand, eight hundred ninety-three".