249475633 has 8 divisors (see below), whose sum is σ = 275214240. Its totient is φ = 224246880.

The previous prime is 249475619. The next prime is 249475649. The reversal of 249475633 is 336574942.

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

It is not a de Polignac number, because 249475633 - 2²⁵ = 215921201 is a prime.

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 249475633.

It is not an unprimeable number, because it can be changed into a prime (249475033) 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, 126435 + ... + 128392.

It is an arithmetic number, because the mean of its divisors is an integer number (34401780).

Almost surely, 2^249475633 is an apocalyptic number.

It is an amenable number.

249475633 is a deficient number, since it is larger than the sum of its proper divisors (25738607).

249475633 is a wasteful number, since it uses less digits than its factorization.

249475633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254927.

The product of its digits is 544320, while the sum is 43.

The square root of 249475633 is about 15794.7976561905. The cubic root of 249475633 is about 629.5197759706.

The spelling of 249475633 in words is "two hundred forty-nine million, four hundred seventy-five thousand, six hundred thirty-three".