90890435 has 4 divisors (see below), whose sum is σ = 109068528. Its totient is φ = 72712344.

The previous prime is 90890407. The next prime is 90890453. The reversal of 90890435 is 53409809.

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 90890435 - 2⁸ = 90890179 is a prime.

It is a super-2 number, since 2×90890435² = 16522142348978450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9089039 + ... + 9089048.

It is an arithmetic number, because the mean of its divisors is an integer number (27267132).

Almost surely, 2^90890435 is an apocalyptic number.

90890435 is a deficient number, since it is larger than the sum of its proper divisors (18178093).

90890435 is a wasteful number, since it uses less digits than its factorization.

90890435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18178092.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 90890435 is about 9533.6475181328. The cubic root of 90890435 is about 449.6135529991.

The spelling of 90890435 in words is "ninety million, eight hundred ninety thousand, four hundred thirty-five".