249348283217 has 32 divisors (see below), whose sum is σ = 286893342720. Its totient is φ = 214623864000.

The previous prime is 249348283213. The next prime is 249348283237. The reversal of 249348283217 is 712382843942.

It is a cyclic number.

It is not a de Polignac number, because 249348283217 - 2² = 249348283213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249348283213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6468992 + ... + 6507422.

It is an arithmetic number, because the mean of its divisors is an integer number (8965416960).

Almost surely, 2^249348283217 is an apocalyptic number.

It is an amenable number.

249348283217 is a deficient number, since it is larger than the sum of its proper divisors (37545059503).

249348283217 is a wasteful number, since it uses less digits than its factorization.

249348283217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38885.

The product of its digits is 4644864, while the sum is 53.

The spelling of 249348283217 in words is "two hundred forty-nine billion, three hundred forty-eight million, two hundred eighty-three thousand, two hundred seventeen".