90093577 has 4 divisors (see below), whose sum is σ = 102964096. Its totient is φ = 77223060.

The previous prime is 90093571. The next prime is 90093581. The reversal of 90093577 is 77539009.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77539009 = 239 ⋅324431.

It is a cyclic number.

It is not a de Polignac number, because 90093577 - 2³ = 90093569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90093571) 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, 6435249 + ... + 6435262.

It is an arithmetic number, because the mean of its divisors is an integer number (25741024).

Almost surely, 2^90093577 is an apocalyptic number.

It is an amenable number.

90093577 is a deficient number, since it is larger than the sum of its proper divisors (12870519).

90093577 is a wasteful number, since it uses less digits than its factorization.

90093577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12870518.

The product of its (nonzero) digits is 59535, while the sum is 40.

The square root of 90093577 is about 9491.7636401251. The cubic root of 90093577 is about 448.2957380463.

The spelling of 90093577 in words is "ninety million, ninety-three thousand, five hundred seventy-seven".