249839375 has 20 divisors (see below), whose sum is σ = 315311568. Its totient is φ = 197880000.

The previous prime is 249839371. The next prime is 249839377. The reversal of 249839375 is 573938942.

It is a happy number.

It is not a de Polignac number, because 249839375 - 2² = 249839371 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 (249839371) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 62435 + ... + 66315.

Almost surely, 2^249839375 is an apocalyptic number.

249839375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

249839375 is a deficient number, since it is larger than the sum of its proper divisors (65472193).

249839375 is an equidigital number, since it uses as much as digits as its factorization.

249839375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4004 (or 3989 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 50.

The square root of 249839375 is about 15806.3080762081. The cubic root of 249839375 is about 629.8255794967.

The spelling of 249839375 in words is "two hundred forty-nine million, eight hundred thirty-nine thousand, three hundred seventy-five".