249529993 has 2 divisors, whose sum is σ = 249529994. Its totient is φ = 249529992.

The previous prime is 249529957. The next prime is 249529999. The reversal of 249529993 is 399925942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244203129 + 5326864 = 15627^2 + 2308^2 .

It is a cyclic number.

It is not a de Polignac number, because 249529993 - 2²⁵ = 215975561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 249529993.

It is not a weakly prime, because it can be changed into another prime (249529999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124764996 + 124764997.

It is an arithmetic number, because the mean of its divisors is an integer number (124764997).

Almost surely, 2^249529993 is an apocalyptic number.

It is an amenable number.

249529993 is a deficient number, since it is larger than the sum of its proper divisors (1).

249529993 is an equidigital number, since it uses as much as digits as its factorization.

249529993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1574640, while the sum is 52.

The square root of 249529993 is about 15796.5183822259. The cubic root of 249529993 is about 629.5654961469.

The spelling of 249529993 in words is "two hundred forty-nine million, five hundred twenty-nine thousand, nine hundred ninety-three".