249204695939 has 2 divisors, whose sum is σ = 249204695940. Its totient is φ = 249204695938.

The previous prime is 249204695911. The next prime is 249204695959. The reversal of 249204695939 is 939596402942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249204695939 - 2³² = 244909728643 is a prime.

It is not a weakly prime, because it can be changed into another prime (249204695959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124602347969 + 124602347970.

It is an arithmetic number, because the mean of its divisors is an integer number (124602347970).

Almost surely, 2^249204695939 is an apocalyptic number.

249204695939 is a deficient number, since it is larger than the sum of its proper divisors (1).

249204695939 is an equidigital number, since it uses as much as digits as its factorization.

249204695939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37791360, while the sum is 62.

The spelling of 249204695939 in words is "two hundred forty-nine billion, two hundred four million, six hundred ninety-five thousand, nine hundred thirty-nine".