249349291 has 2 divisors, whose sum is σ = 249349292. Its totient is φ = 249349290.

The previous prime is 249349207. The next prime is 249349297. The reversal of 249349291 is 192943942.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249349291 - 2¹⁵ = 249316523 is a prime.

It is not a weakly prime, because it can be changed into another prime (249349297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124674645 + 124674646.

It is an arithmetic number, because the mean of its divisors is an integer number (124674646).

Almost surely, 2^249349291 is an apocalyptic number.

249349291 is a deficient number, since it is larger than the sum of its proper divisors (1).

249349291 is an equidigital number, since it uses as much as digits as its factorization.

249349291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 43.

The square root of 249349291 is about 15790.7976682624. The cubic root of 249349291 is about 629.4134887464.

It can be divided in two parts, 24934 and 9291, that added together give a square (34225 = 185²).

The spelling of 249349291 in words is "two hundred forty-nine million, three hundred forty-nine thousand, two hundred ninety-one".