90958431 has 8 divisors (see below), whose sum is σ = 121322160. Its totient is φ = 60616832.

The previous prime is 90958423. The next prime is 90958447. The reversal of 90958431 is 13485909.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90958431 - 2³ = 90958423 is a prime.

It is a super-2 number, since 2×90958431² = 16546872339963522, which contains 22 as substring.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 90958431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90958411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12001 + ... + 18053.

It is an arithmetic number, because the mean of its divisors is an integer number (15165270).

Almost surely, 2^90958431 is an apocalyptic number.

90958431 is a deficient number, since it is larger than the sum of its proper divisors (30363729).

90958431 is a wasteful number, since it uses less digits than its factorization.

90958431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11065.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 90958431 is about 9537.2129576727. The cubic root of 90958431 is about 449.7256451117.

It can be divided in two parts, 909 and 58431, that added together give a triangular number (59340 = T₃₄₄).

The spelling of 90958431 in words is "ninety million, nine hundred fifty-eight thousand, four hundred thirty-one".