90777922 has 8 divisors (see below), whose sum is σ = 136471500. Its totient is φ = 45287424.

The previous prime is 90777913. The next prime is 90777937. The reversal of 90777922 is 22977709.

It can be written as a sum of positive squares in 2 ways, for example, as 88341201 + 2436721 = 9399^2 + 1561^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×90777922² = 16481262245276168, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49647 + ... + 51442.

Almost surely, 2^90777922 is an apocalyptic number.

90777922 is a deficient number, since it is larger than the sum of its proper divisors (45693578).

90777922 is a wasteful number, since it uses less digits than its factorization.

90777922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101540.

The product of its (nonzero) digits is 111132, while the sum is 43.

The square root of 90777922 is about 9527.7448538466. The cubic root of 90777922 is about 449.4279512981.

The spelling of 90777922 in words is "ninety million, seven hundred seventy-seven thousand, nine hundred twenty-two".