90439154 has 16 divisors (see below), whose sum is σ = 146843928. Its totient is φ = 41526912.

The previous prime is 90439127. The next prime is 90439157. The reversal of 90439154 is 45193409.

It can be written as a sum of positive squares in 4 ways, for example, as 70946929 + 19492225 = 8423^2 + 4415^2 .

It is not an unprimeable number, because it can be changed into a prime (90439157) 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, 3707 + ... + 13950.

Almost surely, 2^90439154 is an apocalyptic number.

90439154 is a deficient number, since it is larger than the sum of its proper divisors (56404774).

90439154 is a wasteful number, since it uses less digits than its factorization.

90439154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17869.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 90439154 is about 9509.9502627511. The cubic root of 90439154 is about 448.8681911301.

The spelling of 90439154 in words is "ninety million, four hundred thirty-nine thousand, one hundred fifty-four".