90289641 has 16 divisors (see below), whose sum is σ = 131213376. Its totient is φ = 54891456.

The previous prime is 90289627. The next prime is 90289681. The reversal of 90289641 is 14698209.

It is not a de Polignac number, because 90289641 - 2⁵ = 90289609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90289641.

It is not an unprimeable number, because it can be changed into a prime (90289681) 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, 10710 + ... + 17183.

It is an arithmetic number, because the mean of its divisors is an integer number (8200836).

Almost surely, 2^90289641 is an apocalyptic number.

It is an amenable number.

90289641 is a deficient number, since it is larger than the sum of its proper divisors (40923735).

90289641 is a wasteful number, since it uses less digits than its factorization.

90289641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27992.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 90289641 is about 9502.0861393696. The cubic root of 90289641 is about 448.6207000689.

The spelling of 90289641 in words is "ninety million, two hundred eighty-nine thousand, six hundred forty-one".