90621094 has 4 divisors (see below), whose sum is σ = 135931644. Its totient is φ = 45310546.

The previous prime is 90621079. The next prime is 90621119. The reversal of 90621094 is 49012609.

It is a happy number.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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, 22655272 + ... + 22655275.

It is an arithmetic number, because the mean of its divisors is an integer number (33982911).

Almost surely, 2^90621094 is an apocalyptic number.

90621094 is a deficient number, since it is larger than the sum of its proper divisors (45310550).

90621094 is a wasteful number, since it uses less digits than its factorization.

90621094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45310549.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 90621094 is about 9519.5112269486. The cubic root of 90621094 is about 449.1689914359.

It can be divided in two parts, 906210 and 94, that added together give a square (906304 = 952²).

The spelling of 90621094 in words is "ninety million, six hundred twenty-one thousand, ninety-four".