249442460 has 24 divisors (see below), whose sum is σ = 531008016. Its totient is φ = 98409600.

The previous prime is 249442409. The next prime is 249442463. The reversal of 249442460 is 64244942.

It is a self number, because there is not a number n which added to its sum of digits gives 249442460.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249442463) 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, 83966 + ... + 86885.

It is an arithmetic number, because the mean of its divisors is an integer number (22125334).

Almost surely, 2^249442460 is an apocalyptic number.

249442460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249442460 is an abundant number, since it is smaller than the sum of its proper divisors (281565556).

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

249442460 is a wasteful number, since it uses less digits than its factorization.

249442460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170933 (or 170931 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 249442460 is about 15793.7474970319. The cubic root of 249442460 is about 629.4918721296.

The spelling of 249442460 in words is "two hundred forty-nine million, four hundred forty-two thousand, four hundred sixty".