90863970 has 16 divisors (see below), whose sum is σ = 218073600. Its totient is φ = 24230384.

The previous prime is 90863959. The next prime is 90863987. The reversal of 90863970 is 7936809.

It is a happy number.

It is a super-2 number, since 2×90863970² = 16512522088321800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1514370 + ... + 1514429.

It is an arithmetic number, because the mean of its divisors is an integer number (13629600).

Almost surely, 2^90863970 is an apocalyptic number.

90863970 is an abundant number, since it is smaller than the sum of its proper divisors (127209630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90863970 is a wasteful number, since it uses less digits than its factorization.

90863970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028809.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 90863970 is about 9532.2594383493. The cubic root of 90863970 is about 449.5699100578.

The spelling of 90863970 in words is "ninety million, eight hundred sixty-three thousand, nine hundred seventy".