90242319 has 8 divisors (see below), whose sum is σ = 120408192. Its totient is φ = 60119000.

The previous prime is 90242309. The next prime is 90242359. The reversal of 90242319 is 91324209.

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 90242319 - 2⁸ = 90242063 is a prime.

It is a super-2 number, since 2×90242319² = 16287352276995522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90242309) 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, 5307 + ... + 14444.

It is an arithmetic number, because the mean of its divisors is an integer number (15051024).

Almost surely, 2^90242319 is an apocalyptic number.

90242319 is a deficient number, since it is larger than the sum of its proper divisors (30165873).

90242319 is a wasteful number, since it uses less digits than its factorization.

90242319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21277.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 90242319 is about 9499.5957282402. The cubic root of 90242319 is about 448.5423103499.

The spelling of 90242319 in words is "ninety million, two hundred forty-two thousand, three hundred nineteen".