90491319 has 24 divisors (see below), whose sum is σ = 137970560. Its totient is φ = 56994192.

The previous prime is 90491293. The next prime is 90491321. The reversal of 90491319 is 91319409.

It is a de Polignac number, because none of the positive numbers 2^k-90491319 is a prime.

It is a super-2 number, since 2×90491319² = 16377357628719522, 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 (90491399) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109542 + ... + 110364.

Almost surely, 2^90491319 is an apocalyptic number.

90491319 is a deficient number, since it is larger than the sum of its proper divisors (47479241).

90491319 is a wasteful number, since it uses less digits than its factorization.

90491319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491 (or 1488 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 90491319 is about 9512.6925210479. The cubic root of 90491319 is about 448.9544764305.

The spelling of 90491319 in words is "ninety million, four hundred ninety-one thousand, three hundred nineteen".