77140992 has 44 divisors (see below), whose sum is σ = 205617056. Its totient is φ = 25712640.

The previous prime is 77140991. The next prime is 77140993. The reversal of 77140992 is 29904177.

It is an interprime number because it is at equal distance from previous prime (77140991) and next prime (77140993).

It is a self number, because there is not a number n which added to its sum of digits gives 77140992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77140991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9484 + ... + 15627.

Almost surely, 2^77140992 is an apocalyptic number.

It is an amenable number.

77140992 is an abundant number, since it is smaller than the sum of its proper divisors (128476064).

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

77140992 is a wasteful number, since it uses less digits than its factorization.

77140992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25134 (or 25116 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 77140992 is about 8782.9944779671. The cubic root of 77140992 is about 425.6915927769.

The spelling of 77140992 in words is "seventy-seven million, one hundred forty thousand, nine hundred ninety-two".