90508319 has 4 divisors (see below), whose sum is σ = 98736360. Its totient is φ = 82280280.

The previous prime is 90508291. The next prime is 90508337. The reversal of 90508319 is 91380509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91380509 = 11 ⋅8307319.

It is a cyclic number.

It is not a de Polignac number, because 90508319 - 2²⁰ = 89459743 is a prime.

It is a super-2 number, since 2×90508319² = 16383511616411522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90508339) 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 3 ways as a sum of consecutive naturals, for example, 4114004 + ... + 4114025.

It is an arithmetic number, because the mean of its divisors is an integer number (24684090).

Almost surely, 2^90508319 is an apocalyptic number.

90508319 is a deficient number, since it is larger than the sum of its proper divisors (8228041).

90508319 is a wasteful number, since it uses less digits than its factorization.

90508319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8228040.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 90508319 is about 9513.5860221054. The cubic root of 90508319 is about 448.9825886969.

The spelling of 90508319 in words is "ninety million, five hundred eight thousand, three hundred nineteen".