2779692984 has 128 divisors (see below), whose sum is σ = 8203852800. Its totient is φ = 869045760.

The previous prime is 2779692977. The next prime is 2779693009. The reversal of 2779692984 is 4892969772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1214289 + ... + 1216575.

It is an arithmetic number, because the mean of its divisors is an integer number (64092600).

Almost surely, 2^2779692984 is an apocalyptic number.

2779692984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2779692984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4101926400).

2779692984 is an abundant number, since it is smaller than the sum of its proper divisors (5424159816).

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

2779692984 is a wasteful number, since it uses less digits than its factorization.

2779692984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650 (or 2640 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 63.

The square root of 2779692984 is about 52722.7937802996. The cubic root of 2779692984 is about 1406.0441041130.

The spelling of 2779692984 in words is "two billion, seven hundred seventy-nine million, six hundred ninety-two thousand, nine hundred eighty-four".