2928840839 has 4 divisors (see below), whose sum is σ = 2930055024. Its totient is φ = 2927626656.

The previous prime is 2928840833. The next prime is 2928840841. The reversal of 2928840839 is 9380488292.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2928840839 - 2⁸ = 2928840583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2928840833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603467 + ... + 608300.

It is an arithmetic number, because the mean of its divisors is an integer number (732513756).

Almost surely, 2^2928840839 is an apocalyptic number.

2928840839 is a deficient number, since it is larger than the sum of its proper divisors (1214185).

2928840839 is a wasteful number, since it uses less digits than its factorization.

2928840839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214184.

The product of its (nonzero) digits is 1990656, while the sum is 53.

The square root of 2928840839 is about 54118.7660520822. The cubic root of 2928840839 is about 1430.7549502803.

The spelling of 2928840839 in words is "two billion, nine hundred twenty-eight million, eight hundred forty thousand, eight hundred thirty-nine".