249315427 has 2 divisors, whose sum is σ = 249315428. Its totient is φ = 249315426.

The previous prime is 249315347. The next prime is 249315431. The reversal of 249315427 is 724513942.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249315427 is a prime.

It is not a weakly prime, because it can be changed into another prime (249315467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124657713 + 124657714.

It is an arithmetic number, because the mean of its divisors is an integer number (124657714).

Almost surely, 2^249315427 is an apocalyptic number.

249315427 is a deficient number, since it is larger than the sum of its proper divisors (1).

249315427 is an equidigital number, since it uses as much as digits as its factorization.

249315427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 37.

The square root of 249315427 is about 15789.7253617661. The cubic root of 249315427 is about 629.3849940148.

The spelling of 249315427 in words is "two hundred forty-nine million, three hundred fifteen thousand, four hundred twenty-seven".