90388862 has 4 divisors (see below), whose sum is σ = 135583296. Its totient is φ = 45194430.

The previous prime is 90388861. The next prime is 90388927. The reversal of 90388862 is 26888309.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90388861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22597214 + ... + 22597217.

It is an arithmetic number, because the mean of its divisors is an integer number (33895824).

Almost surely, 2^90388862 is an apocalyptic number.

90388862 is a deficient number, since it is larger than the sum of its proper divisors (45194434).

90388862 is a wasteful number, since it uses less digits than its factorization.

90388862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45194433.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 90388862 is about 9507.3057171840. The cubic root of 90388862 is about 448.7849725100.

The spelling of 90388862 in words is "ninety million, three hundred eighty-eight thousand, eight hundred sixty-two".