249253490 has 32 divisors (see below), whose sum is σ = 475832880. Its totient is φ = 93681664.

The previous prime is 249253469. The next prime is 249253531. The reversal of 249253490 is 94352942.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 217297081 + 31956409 = 14741^2 + 5653^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 202196 + ... + 203424.

Almost surely, 2^249253490 is an apocalyptic number.

249253490 is a deficient number, since it is larger than the sum of its proper divisors (226579390).

249253490 is a wasteful number, since it uses less digits than its factorization.

249253490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 249253490 is about 15787.7639328690. The cubic root of 249253490 is about 629.3328706901.

The spelling of 249253490 in words is "two hundred forty-nine million, two hundred fifty-three thousand, four hundred ninety".