249902371 has 2 divisors, whose sum is σ = 249902372. Its totient is φ = 249902370.

The previous prime is 249902333. The next prime is 249902399. The reversal of 249902371 is 173209942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249902371 - 2²¹ = 247805219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 249902371.

It is not a weakly prime, because it can be changed into another prime (249902071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124951185 + 124951186.

It is an arithmetic number, because the mean of its divisors is an integer number (124951186).

Almost surely, 2^249902371 is an apocalyptic number.

249902371 is a deficient number, since it is larger than the sum of its proper divisors (1).

249902371 is an equidigital number, since it uses as much as digits as its factorization.

249902371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 249902371 is about 15808.3006993162. The cubic root of 249902371 is about 629.8785110491.

The spelling of 249902371 in words is "two hundred forty-nine million, nine hundred two thousand, three hundred seventy-one".