249388297 has 2 divisors, whose sum is σ = 249388298. Its totient is φ = 249388296.

The previous prime is 249388277. The next prime is 249388301. The reversal of 249388297 is 792883942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150405696 + 98982601 = 12264^2 + 9949^2 .

It is a cyclic number.

It is not a de Polignac number, because 249388297 - 2¹⁵ = 249355529 is a prime.

It is not a weakly prime, because it can be changed into another prime (249388277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124694148 + 124694149.

It is an arithmetic number, because the mean of its divisors is an integer number (124694149).

Almost surely, 2^249388297 is an apocalyptic number.

It is an amenable number.

249388297 is a deficient number, since it is larger than the sum of its proper divisors (1).

249388297 is an equidigital number, since it uses as much as digits as its factorization.

249388297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 52.

The square root of 249388297 is about 15792.0327063998. The cubic root of 249388297 is about 629.4463069969.

The spelling of 249388297 in words is "two hundred forty-nine million, three hundred eighty-eight thousand, two hundred ninety-seven".