2149255939 has 2 divisors, whose sum is σ = 2149255940. Its totient is φ = 2149255938.

The previous prime is 2149255877. The next prime is 2149255943. The reversal of 2149255939 is 9395529412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2149255939 - 2²¹ = 2147158787 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2149255892 and 2149255901.

It is not a weakly prime, because it can be changed into another prime (2149252939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074627969 + 1074627970.

It is an arithmetic number, because the mean of its divisors is an integer number (1074627970).

Almost surely, 2^2149255939 is an apocalyptic number.

2149255939 is a deficient number, since it is larger than the sum of its proper divisors (1).

2149255939 is an equidigital number, since it uses as much as digits as its factorization.

2149255939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 874800, while the sum is 49.

The square root of 2149255939 is about 46360.0683670764. The cubic root of 2149255939 is about 1290.5139748264.

The spelling of 2149255939 in words is "two billion, one hundred forty-nine million, two hundred fifty-five thousand, nine hundred thirty-nine".