90863937 has 20 divisors (see below), whose sum is σ = 136209216. Its totient is φ = 60364440.

The previous prime is 90863917. The next prime is 90863951. The reversal of 90863937 is 73936809.

It is a happy number.

90863937 is a `hidden beast` number, since 9 + 0 + 8 + 639 + 3 + 7 = 666.

It is not a de Polignac number, because 90863937 - 2⁷ = 90863809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90863892 and 90863901.

It is not an unprimeable number, because it can be changed into a prime (90863917) 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 19 ways as a sum of consecutive naturals, for example, 23388 + ... + 26994.

Almost surely, 2^90863937 is an apocalyptic number.

It is an amenable number.

90863937 is a deficient number, since it is larger than the sum of its proper divisors (45345279).

90863937 is a wasteful number, since it uses less digits than its factorization.

90863937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3930 (or 3921 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 90863937 is about 9532.2577073850. The cubic root of 90863937 is about 449.5698556328.

The spelling of 90863937 in words is "ninety million, eight hundred sixty-three thousand, nine hundred thirty-seven".