90327993 has 32 divisors (see below), whose sum is σ = 143041536. Its totient is φ = 49629888.

The previous prime is 90327983. The next prime is 90328001. The reversal of 90327993 is 39972309.

It is not a de Polignac number, because 90327993 - 2⁶ = 90327929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90327943) 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, 59755 + ... + 61247.

It is an arithmetic number, because the mean of its divisors is an integer number (4470048).

Almost surely, 2^90327993 is an apocalyptic number.

It is an amenable number.

90327993 is a deficient number, since it is larger than the sum of its proper divisors (52713543).

90327993 is a wasteful number, since it uses less digits than its factorization.

90327993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613.

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

The square root of 90327993 is about 9504.1040082693. The cubic root of 90327993 is about 448.6842107344.

The spelling of 90327993 in words is "ninety million, three hundred twenty-seven thousand, nine hundred ninety-three".