90920009291 has 8 divisors (see below), whose sum is σ = 91808918640. Its totient is φ = 90031825888.

The previous prime is 90920009287. The next prime is 90920009329. The reversal of 90920009291 is 19290002909.

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 90920009291 - 2² = 90920009287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90920009491) 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, 71945 + ... + 432453.

It is an arithmetic number, because the mean of its divisors is an integer number (11476114830).

Almost surely, 2^90920009291 is an apocalyptic number.

90920009291 is a deficient number, since it is larger than the sum of its proper divisors (888909349).

90920009291 is a wasteful number, since it uses less digits than its factorization.

90920009291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362973.

The product of its (nonzero) digits is 26244, while the sum is 41.

The spelling of 90920009291 in words is "ninety billion, nine hundred twenty million, nine thousand, two hundred ninety-one".