249273713 has 4 divisors (see below), whose sum is σ = 268448628. Its totient is φ = 230098800.

The previous prime is 249273707. The next prime is 249273721. The reversal of 249273713 is 317372942.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35617024 + 213656689 = 5968^2 + 14617^2 .

It is a cyclic number.

It is not a de Polignac number, because 249273713 - 2⁶ = 249273649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249273733) 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, 9587438 + ... + 9587463.

It is an arithmetic number, because the mean of its divisors is an integer number (67112157).

Almost surely, 2^249273713 is an apocalyptic number.

It is an amenable number.

249273713 is a deficient number, since it is larger than the sum of its proper divisors (19174915).

249273713 is a wasteful number, since it uses less digits than its factorization.

249273713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19174914.

The product of its digits is 63504, while the sum is 38.

The square root of 249273713 is about 15788.4043842309. The cubic root of 249273713 is about 629.3498903842.

The spelling of 249273713 in words is "two hundred forty-nine million, two hundred seventy-three thousand, seven hundred thirteen".