249926893729 has 2 divisors, whose sum is σ = 249926893730. Its totient is φ = 249926893728.

The previous prime is 249926893687. The next prime is 249926893787. The reversal of 249926893729 is 927398629942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 247628650129 + 2298243600 = 497623^2 + 47940^2 .

It is a cyclic number.

It is not a de Polignac number, because 249926893729 - 2²¹ = 249924796577 is a prime.

It is not a weakly prime, because it can be changed into another prime (249926893789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124963446864 + 124963446865.

It is an arithmetic number, because the mean of its divisors is an integer number (124963446865).

Almost surely, 2^249926893729 is an apocalyptic number.

It is an amenable number.

249926893729 is a deficient number, since it is larger than the sum of its proper divisors (1).

249926893729 is an equidigital number, since it uses as much as digits as its factorization.

249926893729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211631616, while the sum is 70.

The spelling of 249926893729 in words is "two hundred forty-nine billion, nine hundred twenty-six million, eight hundred ninety-three thousand, seven hundred twenty-nine".