90723951 has 12 divisors (see below), whose sum is σ = 138754512. Its totient is φ = 56924736.

The previous prime is 90723947. The next prime is 90723953. The reversal of 90723951 is 15932709.

It is not a de Polignac number, because 90723951 - 2² = 90723947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90723953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 296331 + ... + 296636.

It is an arithmetic number, because the mean of its divisors is an integer number (11562876).

Almost surely, 2^90723951 is an apocalyptic number.

90723951 is a deficient number, since it is larger than the sum of its proper divisors (48030561).

90723951 is a wasteful number, since it uses less digits than its factorization.

90723951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592990 (or 592987 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 90723951 is about 9524.9121255789. The cubic root of 90723951 is about 449.3388661840.

The spelling of 90723951 in words is "ninety million, seven hundred twenty-three thousand, nine hundred fifty-one".