90375299 has 4 divisors (see below), whose sum is σ = 103286064. Its totient is φ = 77464536.

The previous prime is 90375287. The next prime is 90375301. The reversal of 90375299 is 99257309.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99257309 = 61 ⋅1627169.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90375299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90375209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6455372 + ... + 6455385.

It is an arithmetic number, because the mean of its divisors is an integer number (25821516).

Almost surely, 2^90375299 is an apocalyptic number.

90375299 is a deficient number, since it is larger than the sum of its proper divisors (12910765).

90375299 is a wasteful number, since it uses less digits than its factorization.

90375299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12910764.

The product of its (nonzero) digits is 153090, while the sum is 44.

The square root of 90375299 is about 9506.5923968581. The cubic root of 90375299 is about 448.7625244084.

Subtracting from 90375299 its product of nonzero digits (153090), we obtain a palindrome (90222209).

The spelling of 90375299 in words is "ninety million, three hundred seventy-five thousand, two hundred ninety-nine".