249555644 has 24 divisors (see below), whose sum is σ = 475609680. Its totient is φ = 113883264.

The previous prime is 249555629. The next prime is 249555659. The reversal of 249555644 is 446555942.

It is an interprime number because it is at equal distance from previous prime (249555629) and next prime (249555659).

It is a junction number, because it is equal to n+sod(n) for n = 249555595 and 249555604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22334 + ... + 31589.

It is an arithmetic number, because the mean of its divisors is an integer number (19817070).

Almost surely, 2^249555644 is an apocalyptic number.

It is an amenable number.

249555644 is a deficient number, since it is larger than the sum of its proper divisors (226054036).

249555644 is a wasteful number, since it uses less digits than its factorization.

249555644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54029 (or 54027 counting only the distinct ones).

The product of its digits is 864000, while the sum is 44.

The square root of 249555644 is about 15797.3302807785. The cubic root of 249555644 is about 629.5870679441.

The spelling of 249555644 in words is "two hundred forty-nine million, five hundred fifty-five thousand, six hundred forty-four".