249448439 has 2 divisors, whose sum is σ = 249448440. Its totient is φ = 249448438.

The previous prime is 249448421. The next prime is 249448453. The reversal of 249448439 is 934844942.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249448439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 249448393 and 249448402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249448039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124724219 + 124724220.

It is an arithmetic number, because the mean of its divisors is an integer number (124724220).

Almost surely, 2^249448439 is an apocalyptic number.

249448439 is a deficient number, since it is larger than the sum of its proper divisors (1).

249448439 is an equidigital number, since it uses as much as digits as its factorization.

249448439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 47.

The square root of 249448439 is about 15793.9367796633. The cubic root of 249448439 is about 629.4969016152.

The spelling of 249448439 in words is "two hundred forty-nine million, four hundred forty-eight thousand, four hundred thirty-nine".