2920638839 has 2 divisors, whose sum is σ = 2920638840. Its totient is φ = 2920638838.

The previous prime is 2920638779. The next prime is 2920638859. The reversal of 2920638839 is 9388360292.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2920638839 - 2⁸ = 2920638583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2920638859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1460319419 + 1460319420.

It is an arithmetic number, because the mean of its divisors is an integer number (1460319420).

Almost surely, 2^2920638839 is an apocalyptic number.

2920638839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2920638839 is an equidigital number, since it uses as much as digits as its factorization.

2920638839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The square root of 2920638839 is about 54042.9351441981. The cubic root of 2920638839 is about 1429.4181274891.

The spelling of 2920638839 in words is "two billion, nine hundred twenty million, six hundred thirty-eight thousand, eight hundred thirty-nine".