2439777157 has 2 divisors, whose sum is σ = 2439777158. Its totient is φ = 2439777156.

The previous prime is 2439777149. The next prime is 2439777173. The reversal of 2439777157 is 7517779342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2437791876 + 1985281 = 49374^2 + 1409^2 .

It is a cyclic number.

It is not a de Polignac number, because 2439777157 - 2³ = 2439777149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2439772157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1219888578 + 1219888579.

It is an arithmetic number, because the mean of its divisors is an integer number (1219888579).

Almost surely, 2^2439777157 is an apocalyptic number.

It is an amenable number.

2439777157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2439777157 is an equidigital number, since it uses as much as digits as its factorization.

2439777157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2593080, while the sum is 52.

The square root of 2439777157 is about 49394.1004270753. The cubic root of 2439777157 is about 1346.2221138736. Note that the first 3 decimals are identical.

The spelling of 2439777157 in words is "two billion, four hundred thirty-nine million, seven hundred seventy-seven thousand, one hundred fifty-seven".