249290417 has 4 divisors (see below), whose sum is σ = 252294000. Its totient is φ = 246286836.

The previous prime is 249290413. The next prime is 249290441. The reversal of 249290417 is 714092942.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 249290417 - 2² = 249290413 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249290413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1501667 + ... + 1501832.

It is an arithmetic number, because the mean of its divisors is an integer number (63073500).

Almost surely, 2^249290417 is an apocalyptic number.

It is an amenable number.

249290417 is a deficient number, since it is larger than the sum of its proper divisors (3003583).

249290417 is an equidigital number, since it uses as much as digits as its factorization.

249290417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003582.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 249290417 is about 15788.9333711939. The cubic root of 249290417 is about 629.3639477907.

The spelling of 249290417 in words is "two hundred forty-nine million, two hundred ninety thousand, four hundred seventeen".