90897490 has 16 divisors (see below), whose sum is σ = 163912320. Its totient is φ = 36293040.

The previous prime is 90897467. The next prime is 90897497. The reversal of 90897490 is 9479809.

It is a self number, because there is not a number n which added to its sum of digits gives 90897490.

It is not an unprimeable number, because it can be changed into a prime (90897497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2250 + ... + 13669.

It is an arithmetic number, because the mean of its divisors is an integer number (10244520).

Almost surely, 2^90897490 is an apocalyptic number.

90897490 is a deficient number, since it is larger than the sum of its proper divisors (73014830).

90897490 is a wasteful number, since it uses less digits than its factorization.

90897490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16497.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 90897490 is about 9534.0175162415. The cubic root of 90897490 is about 449.6251858387.

The spelling of 90897490 in words is "ninety million, eight hundred ninety-seven thousand, four hundred ninety".