77494049 has 2 divisors, whose sum is σ = 77494050. Its totient is φ = 77494048.

The previous prime is 77494033. The next prime is 77494063. The reversal of 77494049 is 94049477.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76877824 + 616225 = 8768^2 + 785^2 .

It is a cyclic number.

It is not a de Polignac number, because 77494049 - 2⁴ = 77494033 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (77494349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38747024 + 38747025.

It is an arithmetic number, because the mean of its divisors is an integer number (38747025).

Almost surely, 2^77494049 is an apocalyptic number.

It is an amenable number.

77494049 is a deficient number, since it is larger than the sum of its proper divisors (1).

77494049 is an equidigital number, since it uses as much as digits as its factorization.

77494049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 77494049 is about 8803.0704302533. The cubic root of 77494049 is about 426.3400361342.

The spelling of 77494049 in words is "seventy-seven million, four hundred ninety-four thousand, forty-nine".