957981139 has 2 divisors, whose sum is σ = 957981140. Its totient is φ = 957981138.

The previous prime is 957981067. The next prime is 957981151. The reversal of 957981139 is 931189759.

It is a happy number.

957981139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (931189759) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 957981139 - 2¹³ = 957972947 is a prime.

It is not a weakly prime, because it can be changed into another prime (957981239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 478990569 + 478990570.

It is an arithmetic number, because the mean of its divisors is an integer number (478990570).

Almost surely, 2^957981139 is an apocalyptic number.

957981139 is a deficient number, since it is larger than the sum of its proper divisors (1).

957981139 is an equidigital number, since it uses as much as digits as its factorization.

957981139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 52.

The square root of 957981139 is about 30951.2703939596. The cubic root of 957981139 is about 985.7928250570.

The spelling of 957981139 in words is "nine hundred fifty-seven million, nine hundred eighty-one thousand, one hundred thirty-nine".