90438315 has 32 divisors (see below), whose sum is σ = 162957312. Its totient is φ = 42432000.

The previous prime is 90438133. The next prime is 90438343. The reversal of 90438315 is 51383409.

It is not a de Polignac number, because 90438315 - 2⁹ = 90437803 is a prime.

It is a super-3 number, since 3×90438315³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3726 + ... + 13955.

It is an arithmetic number, because the mean of its divisors is an integer number (5092416).

Almost surely, 2^90438315 is an apocalyptic number.

90438315 is a deficient number, since it is larger than the sum of its proper divisors (72518997).

90438315 is a wasteful number, since it uses less digits than its factorization.

90438315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17731.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 90438315 is about 9509.9061509565. The cubic root of 90438315 is about 448.8668030824.

The spelling of 90438315 in words is "ninety million, four hundred thirty-eight thousand, three hundred fifteen".