77953039 has 2 divisors, whose sum is σ = 77953040. Its totient is φ = 77953038.

The previous prime is 77953037. The next prime is 77953069. The reversal of 77953039 is 93035977.

It is a weak prime.

It is an emirp because it is prime and its reverse (93035977) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77953039 - 2¹ = 77953037 is a prime.

Together with 77953037, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 77952986 and 77953004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77953033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38976519 + 38976520.

It is an arithmetic number, because the mean of its divisors is an integer number (38976520).

Almost surely, 2^77953039 is an apocalyptic number.

77953039 is a deficient number, since it is larger than the sum of its proper divisors (1).

77953039 is an equidigital number, since it uses as much as digits as its factorization.

77953039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 178605, while the sum is 43.

The square root of 77953039 is about 8829.1018229489. The cubic root of 77953039 is about 427.1801038084.

The spelling of 77953039 in words is "seventy-seven million, nine hundred fifty-three thousand, thirty-nine".