90481138 has 24 divisors (see below), whose sum is σ = 150893820. Its totient is φ = 40656000.

The previous prime is 90481129. The next prime is 90481147. The reversal of 90481138 is 83118409.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (90481129) and next prime (90481147).

It can be written as a sum of positive squares in 2 ways, for example, as 74183769 + 16297369 = 8613^2 + 4037^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19438 + ... + 23638.

Almost surely, 2^90481138 is an apocalyptic number.

90481138 is a deficient number, since it is larger than the sum of its proper divisors (60412682).

90481138 is a wasteful number, since it uses less digits than its factorization.

90481138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4314 (or 4303 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 90481138 is about 9512.1573788494. The cubic root of 90481138 is about 448.9376388045.

The spelling of 90481138 in words is "ninety million, four hundred eighty-one thousand, one hundred thirty-eight".