2779776396 has 72 divisors (see below), whose sum is σ = 7082659584. Its totient is φ = 919242720.

The previous prime is 2779776313. The next prime is 2779776421. The reversal of 2779776396 is 6936779772.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3133465 + ... + 3134351.

It is an arithmetic number, because the mean of its divisors is an integer number (98370272).

Almost surely, 2^2779776396 is an apocalyptic number.

It is an amenable number.

2779776396 is an abundant number, since it is smaller than the sum of its proper divisors (4302883188).

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

2779776396 is a wasteful number, since it uses less digits than its factorization.

2779776396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491 (or 1486 counting only the distinct ones).

The product of its digits is 42007896, while the sum is 63.

The square root of 2779776396 is about 52723.5848174230. The cubic root of 2779776396 is about 1406.0581679897.

The spelling of 2779776396 in words is "two billion, seven hundred seventy-nine million, seven hundred seventy-six thousand, three hundred ninety-six".