77964953 has 4 divisors (see below), whose sum is σ = 85052688. Its totient is φ = 70877220.

The previous prime is 77964947. The next prime is 77964973. The reversal of 77964953 is 35946977.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35946977 = 11 ⋅3267907.

It is a cyclic number.

It is not a de Polignac number, because 77964953 - 2⁴ = 77964937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77964973) 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 in 3 ways as a sum of consecutive naturals, for example, 3543851 + ... + 3543872.

It is an arithmetic number, because the mean of its divisors is an integer number (21263172).

Almost surely, 2^77964953 is an apocalyptic number.

It is an amenable number.

77964953 is a deficient number, since it is larger than the sum of its proper divisors (7087735).

77964953 is a wasteful number, since it uses less digits than its factorization.

77964953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7087734.

The product of its digits is 1428840, while the sum is 50.

The square root of 77964953 is about 8829.7764977376. The cubic root of 77964953 is about 427.2018654766.

The spelling of 77964953 in words is "seventy-seven million, nine hundred sixty-four thousand, nine hundred fifty-three".