90929286921 has 8 divisors (see below), whose sum is σ = 132260781024. Its totient is φ = 55108658720.

The previous prime is 90929286907. The next prime is 90929286953. The reversal of 90929286921 is 12968292909.

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 90929286921 - 2¹⁰ = 90929285897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90929246921) 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, 1377716436 + ... + 1377716501.

It is an arithmetic number, because the mean of its divisors is an integer number (16532597628).

Almost surely, 2^90929286921 is an apocalyptic number.

It is an amenable number.

90929286921 is a deficient number, since it is larger than the sum of its proper divisors (41331494103).

90929286921 is a wasteful number, since it uses less digits than its factorization.

90929286921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755432951.

The product of its (nonzero) digits is 2519424, while the sum is 57.

The spelling of 90929286921 in words is "ninety billion, nine hundred twenty-nine million, two hundred eighty-six thousand, nine hundred twenty-one".