249694357 has 4 divisors (see below), whose sum is σ = 272393856. Its totient is φ = 226994860.

The previous prime is 249694343. The next prime is 249694363. The reversal of 249694357 is 753496942.

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 249694357 - 2⁷ = 249694229 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 249694357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249694337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11349733 + ... + 11349754.

It is an arithmetic number, because the mean of its divisors is an integer number (68098464).

Almost surely, 2^249694357 is an apocalyptic number.

It is an amenable number.

249694357 is a deficient number, since it is larger than the sum of its proper divisors (22699499).

249694357 is a wasteful number, since it uses less digits than its factorization.

249694357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22699498.

The product of its digits is 1632960, while the sum is 49.

The square root of 249694357 is about 15801.7200646006. The cubic root of 249694357 is about 629.7036962221.

The spelling of 249694357 in words is "two hundred forty-nine million, six hundred ninety-four thousand, three hundred fifty-seven".