77440995 has 16 divisors (see below), whose sum is σ = 137673120. Its totient is φ = 41301792.

The previous prime is 77440973. The next prime is 77440997. The reversal of 77440995 is 59904477.

It is not a de Polignac number, because 77440995 - 2²⁰ = 76392419 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 77440995.

It is not an unprimeable number, because it can be changed into a prime (77440997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286684 + ... + 286953.

It is an arithmetic number, because the mean of its divisors is an integer number (8604570).

Almost surely, 2^77440995 is an apocalyptic number.

77440995 is a deficient number, since it is larger than the sum of its proper divisors (60232125).

77440995 is a wasteful number, since it uses less digits than its factorization.

77440995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573651 (or 573645 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 77440995 is about 8800.0565339093. The cubic root of 77440995 is about 426.2427202398.

The spelling of 77440995 in words is "seventy-seven million, four hundred forty thousand, nine hundred ninety-five".