77044313 has 2 divisors, whose sum is σ = 77044314. Its totient is φ = 77044312.

The previous prime is 77044291. The next prime is 77044333. The reversal of 77044313 is 31344077.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56505289 + 20539024 = 7517^2 + 4532^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77044313 is a prime.

It is not a weakly prime, because it can be changed into another prime (77044333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38522156 + 38522157.

It is an arithmetic number, because the mean of its divisors is an integer number (38522157).

Almost surely, 2^77044313 is an apocalyptic number.

It is an amenable number.

77044313 is a deficient number, since it is larger than the sum of its proper divisors (1).

77044313 is an equidigital number, since it uses as much as digits as its factorization.

77044313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 77044313 is about 8777.4889917333. The cubic root of 77044313 is about 425.5136819954.

The spelling of 77044313 in words is "seventy-seven million, forty-four thousand, three hundred thirteen".