249937490 has 32 divisors (see below), whose sum is σ = 491489856. Its totient is φ = 90756160.

The previous prime is 249937489. The next prime is 249937547. The reversal of 249937490 is 94739942.

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, 110309 + ... + 112551.

It is an arithmetic number, because the mean of its divisors is an integer number (15359058).

Almost surely, 2^249937490 is an apocalyptic number.

249937490 is a deficient number, since it is larger than the sum of its proper divisors (241552366).

249937490 is a wasteful number, since it uses less digits than its factorization.

249937490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3274.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 249937490 is about 15809.4114374951. The cubic root of 249937490 is about 629.9080154608.

It can be divided in two parts, 249 and 937490, that added together give a palindrome (937739).

The spelling of 249937490 in words is "two hundred forty-nine million, nine hundred thirty-seven thousand, four hundred ninety".