249320217 has 8 divisors (see below), whose sum is σ = 335718720. Its totient is φ = 164567600.

The previous prime is 249320213. The next prime is 249320219. The reversal of 249320217 is 712023942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 249320217 - 2² = 249320213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (249320213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411117 + ... + 411722.

It is an arithmetic number, because the mean of its divisors is an integer number (41964840).

Almost surely, 2^249320217 is an apocalyptic number.

It is an amenable number.

249320217 is a deficient number, since it is larger than the sum of its proper divisors (86398503).

249320217 is a wasteful number, since it uses less digits than its factorization.

249320217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822943.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 249320217 is about 15789.8770419532. The cubic root of 249320217 is about 629.3890246984.

The spelling of 249320217 in words is "two hundred forty-nine million, three hundred twenty thousand, two hundred seventeen".