90771900 has 36 divisors (see below), whose sum is σ = 262634232. Its totient is φ = 24205760.

The previous prime is 90771893. The next prime is 90771917. The reversal of 90771900 is 917709.

It is a super-2 number, since 2×90771900² = 16479075659220000, which contains 22 as substring.

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 in 11 ways as a sum of consecutive naturals, for example, 150987 + ... + 151586.

Almost surely, 2^90771900 is an apocalyptic number.

It is an amenable number.

90771900 is an abundant number, since it is smaller than the sum of its proper divisors (171862332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90771900 is a wasteful number, since it uses less digits than its factorization.

90771900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302590 (or 302583 counting only the distinct ones).

The product of its (nonzero) digits is 3969, while the sum is 33.

The square root of 90771900 is about 9527.4288241897. The cubic root of 90771900 is about 449.4180130704.

The spelling of 90771900 in words is "ninety million, seven hundred seventy-one thousand, nine hundred".