777993396 has 12 divisors (see below), whose sum is σ = 1815317952. Its totient is φ = 259331128.

The previous prime is 777993383. The next prime is 777993401. The reversal of 777993396 is 693399777.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×777993396² = 1210547448439225632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32416380 + ... + 32416403.

It is an arithmetic number, because the mean of its divisors is an integer number (151276496).

Almost surely, 2^777993396 is an apocalyptic number.

It is an amenable number.

777993396 is an abundant number, since it is smaller than the sum of its proper divisors (1037324556).

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

777993396 is a wasteful number, since it uses less digits than its factorization.

777993396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64832790 (or 64832788 counting only the distinct ones).

The product of its digits is 13502538, while the sum is 60.

The square root of 777993396 is about 27892.5329792760. The cubic root of 777993396 is about 919.7263663218.

The spelling of 777993396 in words is "seven hundred seventy-seven million, nine hundred ninety-three thousand, three hundred ninety-six".