2780904939 has 8 divisors (see below), whose sum is σ = 3732429312. Its totient is φ = 1841658600.

The previous prime is 2780904937. The next prime is 2780904949. The reversal of 2780904939 is 9394090872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2780904939 - 2¹ = 2780904937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2780904891 and 2780904900.

It is not an unprimeable number, because it can be changed into a prime (2780904937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3068979 + ... + 3069884.

It is an arithmetic number, because the mean of its divisors is an integer number (466553664).

Almost surely, 2^2780904939 is an apocalyptic number.

2780904939 is a deficient number, since it is larger than the sum of its proper divisors (951524373).

2780904939 is a wasteful number, since it uses less digits than its factorization.

2780904939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6139017.

The product of its (nonzero) digits is 979776, while the sum is 51.

The square root of 2780904939 is about 52734.2861808141. The cubic root of 2780904939 is about 1406.2484209918.

The spelling of 2780904939 in words is "two billion, seven hundred eighty million, nine hundred four thousand, nine hundred thirty-nine".