77963412 has 48 divisors (see below), whose sum is σ = 187326720. Its totient is φ = 25224192.

The previous prime is 77963407. The next prime is 77963423. The reversal of 77963412 is 21436977.

It is a super-2 number, since 2×77963412² = 12156587221363488, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76764 + ... + 77772.

It is an arithmetic number, because the mean of its divisors is an integer number (3902640).

Almost surely, 2^77963412 is an apocalyptic number.

It is an amenable number.

77963412 is an abundant number, since it is smaller than the sum of its proper divisors (109363308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77963412 is a wasteful number, since it uses less digits than its factorization.

77963412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200 (or 1198 counting only the distinct ones).

The product of its digits is 63504, while the sum is 39.

The square root of 77963412 is about 8829.6892357546. The cubic root of 77963412 is about 427.1990508683.

The spelling of 77963412 in words is "seventy-seven million, nine hundred sixty-three thousand, four hundred twelve".