90464893 has 4 divisors (see below), whose sum is σ = 90840508. Its totient is φ = 90089280.

The previous prime is 90464887. The next prime is 90464897. The reversal of 90464893 is 39846409.

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

It can be written as a sum of positive squares in 2 ways, for example, as 54140164 + 36324729 = 7358^2 + 6027^2 .

It is a cyclic number.

It is not a de Polignac number, because 90464893 - 2⁵ = 90464861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90464897) 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, 187446 + ... + 187927.

It is an arithmetic number, because the mean of its divisors is an integer number (22710127).

Almost surely, 2^90464893 is an apocalyptic number.

It is an amenable number.

90464893 is a deficient number, since it is larger than the sum of its proper divisors (375615).

90464893 is a wasteful number, since it uses less digits than its factorization.

90464893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375614.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 90464893 is about 9511.3034332840. The cubic root of 90464893 is about 448.9107697479.

The spelling of 90464893 in words is "ninety million, four hundred sixty-four thousand, eight hundred ninety-three".