249337939 has 4 divisors (see below), whose sum is σ = 250286256. Its totient is φ = 248389624.

The previous prime is 249337937. The next prime is 249337981. The reversal of 249337939 is 939733942.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 249337939 - 2¹ = 249337937 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 249337892 and 249337901.

It is not an unprimeable number, because it can be changed into a prime (249337937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473764 + ... + 474289.

It is an arithmetic number, because the mean of its divisors is an integer number (62571564).

Almost surely, 2^249337939 is an apocalyptic number.

249337939 is a deficient number, since it is larger than the sum of its proper divisors (948317).

249337939 is an equidigital number, since it uses as much as digits as its factorization.

249337939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948316.

The product of its digits is 1102248, while the sum is 49.

The square root of 249337939 is about 15790.4382143118. The cubic root of 249337939 is about 629.4039369375.

The spelling of 249337939 in words is "two hundred forty-nine million, three hundred thirty-seven thousand, nine hundred thirty-nine".