249386460 has 24 divisors (see below), whose sum is σ = 698282256. Its totient is φ = 66503040.

The previous prime is 249386453. The next prime is 249386461. The reversal of 249386460 is 64683942.

It is a happy number.

249386460 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249386461) 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, 2078161 + ... + 2078280.

It is an arithmetic number, because the mean of its divisors is an integer number (29095094).

Almost surely, 2^249386460 is an apocalyptic number.

249386460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249386460 is an abundant number, since it is smaller than the sum of its proper divisors (448895796).

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

249386460 is a wasteful number, since it uses less digits than its factorization.

249386460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4156453 (or 4156451 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 249386460 is about 15791.9745440524. The cubic root of 249386460 is about 629.4447614877. Note that the first 3 decimals are identical.

The spelling of 249386460 in words is "two hundred forty-nine million, three hundred eighty-six thousand, four hundred sixty".