90940291 has 4 divisors (see below), whose sum is σ = 97935712. Its totient is φ = 83944872.

The previous prime is 90940273. The next prime is 90940301. The reversal of 90940291 is 19204909.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90940291 - 2⁷ = 90940163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90940271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3497691 + ... + 3497716.

It is an arithmetic number, because the mean of its divisors is an integer number (24483928).

Almost surely, 2^90940291 is an apocalyptic number.

90940291 is a deficient number, since it is larger than the sum of its proper divisors (6995421).

90940291 is a wasteful number, since it uses less digits than its factorization.

90940291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6995420.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 90940291 is about 9536.2618986687. The cubic root of 90940291 is about 449.6957465983.

The spelling of 90940291 in words is "ninety million, nine hundred forty thousand, two hundred ninety-one".