77990322 has 16 divisors (see below), whose sum is σ = 165156192. Its totient is φ = 24467520.

The previous prime is 77990321. The next prime is 77990329. The reversal of 77990322 is 22309977.

It is not an unprimeable number, because it can be changed into a prime (77990321) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 382204 + ... + 382407.

It is an arithmetic number, because the mean of its divisors is an integer number (10322262).

Almost surely, 2^77990322 is an apocalyptic number.

77990322 is an abundant number, since it is smaller than the sum of its proper divisors (87165870).

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

77990322 is a wasteful number, since it uses less digits than its factorization.

77990322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764633.

The product of its (nonzero) digits is 47628, while the sum is 39.

The square root of 77990322 is about 8831.2129404743. The cubic root of 77990322 is about 427.2481961608.

The spelling of 77990322 in words is "seventy-seven million, nine hundred ninety thousand, three hundred twenty-two".