90817914 has 32 divisors (see below), whose sum is σ = 200387520. Its totient is φ = 27209600.

The previous prime is 90817901. The next prime is 90817919. The reversal of 90817914 is 41971809.

It is a happy number.

It is a super-2 number, since 2×90817914² = 16495787006622792, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90817919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1857 + ... + 13604.

It is an arithmetic number, because the mean of its divisors is an integer number (6262110).

Almost surely, 2^90817914 is an apocalyptic number.

90817914 is an abundant number, since it is smaller than the sum of its proper divisors (109569606).

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

90817914 is a wasteful number, since it uses less digits than its factorization.

90817914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15566.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 90817914 is about 9529.8433355433. The cubic root of 90817914 is about 449.4939397509.

The spelling of 90817914 in words is "ninety million, eight hundred seventeen thousand, nine hundred fourteen".