249873057 has 12 divisors (see below), whose sum is σ = 412488960. Its totient is φ = 142784568.

The previous prime is 249873011. The next prime is 249873059. The reversal of 249873057 is 750378942.

It is not a de Polignac number, because 249873057 - 2⁶ = 249872993 is a prime.

It is a super-2 number, since 2×249873057² = 124873089229050498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (249873059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1983057 + ... + 1983182.

It is an arithmetic number, because the mean of its divisors is an integer number (34374080).

Almost surely, 2^249873057 is an apocalyptic number.

It is an amenable number.

249873057 is a deficient number, since it is larger than the sum of its proper divisors (162615903).

249873057 is a wasteful number, since it uses less digits than its factorization.

249873057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3966252 (or 3966249 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 249873057 is about 15807.3735009963. The cubic root of 249873057 is about 629.8538814566.

The spelling of 249873057 in words is "two hundred forty-nine million, eight hundred seventy-three thousand, fifty-seven".