90739886 has 4 divisors (see below), whose sum is σ = 136109832. Its totient is φ = 45369942.

The previous prime is 90739843. The next prime is 90739889. The reversal of 90739886 is 68893709.

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

It is a super-2 number, since 2×90739886² = 16467453822585992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90739889) 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 as a sum of consecutive naturals, namely, 22684970 + ... + 22684973.

It is an arithmetic number, because the mean of its divisors is an integer number (34027458).

Almost surely, 2^90739886 is an apocalyptic number.

90739886 is a deficient number, since it is larger than the sum of its proper divisors (45369946).

90739886 is a wasteful number, since it uses less digits than its factorization.

90739886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45369945.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 90739886 is about 9525.7485795081. The cubic root of 90739886 is about 449.3651723416.

The spelling of 90739886 in words is "ninety million, seven hundred thirty-nine thousand, eight hundred eighty-six".