249903493 has 8 divisors (see below), whose sum is σ = 294817280. Its totient is φ = 207293040.

The previous prime is 249903449. The next prime is 249903503. The reversal of 249903493 is 394309942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 249903493 - 2¹⁷ = 249772421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249903403) 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, 575598 + ... + 576031.

It is an arithmetic number, because the mean of its divisors is an integer number (36852160).

Almost surely, 2^249903493 is an apocalyptic number.

It is an amenable number.

249903493 is a deficient number, since it is larger than the sum of its proper divisors (44913787).

249903493 is a wasteful number, since it uses less digits than its factorization.

249903493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151667.

The product of its (nonzero) digits is 209952, while the sum is 43.

The square root of 249903493 is about 15808.3361869616. The cubic root of 249903493 is about 629.8794537141.

The spelling of 249903493 in words is "two hundred forty-nine million, nine hundred three thousand, four hundred ninety-three".