90478157 has 12 divisors (see below), whose sum is σ = 114818976. Its totient is φ = 70502040.

The previous prime is 90478139. The next prime is 90478169. The reversal of 90478157 is 75187409.

It is not a de Polignac number, because 90478157 - 2¹² = 90474061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90478127) by changing a digit.

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, 83393 + ... + 84470.

It is an arithmetic number, because the mean of its divisors is an integer number (9568248).

Almost surely, 2^90478157 is an apocalyptic number.

It is an amenable number.

90478157 is a deficient number, since it is larger than the sum of its proper divisors (24340819).

90478157 is a wasteful number, since it uses less digits than its factorization.

90478157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167888 (or 167881 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 90478157 is about 9512.0006833473. Note that the first 3 decimals coincide. The cubic root of 90478157 is about 448.9327085033.

The spelling of 90478157 in words is "ninety million, four hundred seventy-eight thousand, one hundred fifty-seven".