90269808 has 40 divisors (see below), whose sum is σ = 241242000. Its totient is φ = 29051904.

The previous prime is 90269807. The next prime is 90269827. The reversal of 90269808 is 80896209.

It is a self number, because there is not a number n which added to its sum of digits gives 90269808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90269807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31033 + ... + 33816.

It is an arithmetic number, because the mean of its divisors is an integer number (6031050).

Almost surely, 2^90269808 is an apocalyptic number.

It is an amenable number.

90269808 is an abundant number, since it is smaller than the sum of its proper divisors (150972192).

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

90269808 is a wasteful number, since it uses less digits than its factorization.

90269808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64889 (or 64883 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 90269808 is about 9501.0424691188. The cubic root of 90269808 is about 448.5878496932.

Subtracting from 90269808 its sum of digits (42), we obtain a triangular number (90269766 = T₁₃₄₃₆).

The spelling of 90269808 in words is "ninety million, two hundred sixty-nine thousand, eight hundred eight".