90923973 has 32 divisors (see below), whose sum is σ = 150137856. Its totient is φ = 47755008.

The previous prime is 90923969. The next prime is 90923983. The reversal of 90923973 is 37932909.

It is not a de Polignac number, because 90923973 - 2² = 90923969 is a prime.

It is a super-2 number, since 2×90923973² = 16534337732209458, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90923933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12390 + ... + 18312.

It is an arithmetic number, because the mean of its divisors is an integer number (4691808).

Almost surely, 2^90923973 is an apocalyptic number.

It is an amenable number.

90923973 is a deficient number, since it is larger than the sum of its proper divisors (59213883).

90923973 is a wasteful number, since it uses less digits than its factorization.

90923973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5993.

The product of its (nonzero) digits is 91854, while the sum is 42.

The square root of 90923973 is about 9535.4062839504. The cubic root of 90923973 is about 449.6688477248.

The spelling of 90923973 in words is "ninety million, nine hundred twenty-three thousand, nine hundred seventy-three".