249485644 has 24 divisors (see below), whose sum is σ = 451662848. Its totient is φ = 120456720.

The previous prime is 249485641. The next prime is 249485651. The reversal of 249485644 is 446584942.

It is a junction number, because it is equal to n+sod(n) for n = 249485594 and 249485603.

It is not an unprimeable number, because it can be changed into a prime (249485641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62929 + ... + 66775.

Almost surely, 2^249485644 is an apocalyptic number.

It is an amenable number.

249485644 is a deficient number, since it is larger than the sum of its proper divisors (202177204).

249485644 is a wasteful number, since it uses less digits than its factorization.

249485644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4405 (or 4403 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 46.

The square root of 249485644 is about 15795.1145611547. The cubic root of 249485644 is about 629.5281963496.

The spelling of 249485644 in words is "two hundred forty-nine million, four hundred eighty-five thousand, six hundred forty-four".