77295949 has 2 divisors, whose sum is σ = 77295950. Its totient is φ = 77295948.

The previous prime is 77295943. The next prime is 77295979. The reversal of 77295949 is 94959277.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53187849 + 24108100 = 7293^2 + 4910^2 .

It is a cyclic number.

It is not a de Polignac number, because 77295949 - 2²⁵ = 43741517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77295896 and 77295905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77295943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38647974 + 38647975.

It is an arithmetic number, because the mean of its divisors is an integer number (38647975).

Almost surely, 2^77295949 is an apocalyptic number.

It is an amenable number.

77295949 is a deficient number, since it is larger than the sum of its proper divisors (1).

77295949 is an equidigital number, since it uses as much as digits as its factorization.

77295949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 52.

The square root of 77295949 is about 8791.8114743209. The cubic root of 77295949 is about 425.9764381893.

It can be divided in two parts, 772 and 95949, that added together give a square (96721 = 311²).

The spelling of 77295949 in words is "seventy-seven million, two hundred ninety-five thousand, nine hundred forty-nine".