90081873 has 12 divisors (see below), whose sum is σ = 148706688. Its totient is φ = 51475320.

The previous prime is 90081847. The next prime is 90081881. The reversal of 90081873 is 37818009.

It is not a de Polignac number, because 90081873 - 2⁹ = 90081361 is a prime.

It is a super-2 number, since 2×90081873² = 16229487686376258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90081833) 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, 714873 + ... + 714998.

It is an arithmetic number, because the mean of its divisors is an integer number (12392224).

Almost surely, 2^90081873 is an apocalyptic number.

It is an amenable number.

90081873 is a deficient number, since it is larger than the sum of its proper divisors (58624815).

90081873 is a wasteful number, since it uses less digits than its factorization.

90081873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429884 (or 1429881 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 90081873 is about 9491.1470855740. The cubic root of 90081873 is about 448.2763245997.

The spelling of 90081873 in words is "ninety million, eighty-one thousand, eight hundred seventy-three".