249403960 has 32 divisors (see below), whose sum is σ = 604326240. Its totient is φ = 92087424.

The previous prime is 249403951. The next prime is 249403967. The reversal of 249403960 is 69304942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249403967) 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, 239292 + ... + 240331.

It is an arithmetic number, because the mean of its divisors is an integer number (18885195).

Almost surely, 2^249403960 is an apocalyptic number.

249403960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249403960 is an abundant number, since it is smaller than the sum of its proper divisors (354922280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249403960 is a wasteful number, since it uses less digits than its factorization.

249403960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479647 (or 479643 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 249403960 is about 15792.5286132399. The cubic root of 249403960 is about 629.4594843208.

It can be divided in two parts, 24940 and 3960, that added together give a square (28900 = 170²).

The spelling of 249403960 in words is "two hundred forty-nine million, four hundred three thousand, nine hundred sixty".