77448959 has 24 divisors (see below), whose sum is σ = 97196400. Its totient is φ = 61326720.

The previous prime is 77448949. The next prime is 77448989. The reversal of 77448959 is 95984477.

It is not a de Polignac number, because 77448959 - 2²⁰ = 76400383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77448959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77448949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37157 + ... + 39185.

It is an arithmetic number, because the mean of its divisors is an integer number (4049850).

Almost surely, 2^77448959 is an apocalyptic number.

77448959 is a deficient number, since it is larger than the sum of its proper divisors (19747441).

77448959 is a wasteful number, since it uses less digits than its factorization.

77448959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103 (or 2096 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 53.

The square root of 77448959 is about 8800.5090193693. The cubic root of 77448959 is about 426.2573312809.

The spelling of 77448959 in words is "seventy-seven million, four hundred forty-eight thousand, nine hundred fifty-nine".