249711377 has 2 divisors, whose sum is σ = 249711378. Its totient is φ = 249711376.

The previous prime is 249711359. The next prime is 249711379. The reversal of 249711377 is 773117942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220106896 + 29604481 = 14836^2 + 5441^2 .

It is a cyclic number.

It is not a de Polignac number, because 249711377 - 2¹⁰ = 249710353 is a prime.

It is a super-2 number, since 2×249711377² = 124711543606472258, which contains 22 as substring.

Together with 249711379, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (249711379) 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, 124855688 + 124855689.

It is an arithmetic number, because the mean of its divisors is an integer number (124855689).

Almost surely, 2^249711377 is an apocalyptic number.

It is an amenable number.

249711377 is a deficient number, since it is larger than the sum of its proper divisors (1).

249711377 is an equidigital number, since it uses as much as digits as its factorization.

249711377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 74088, while the sum is 41.

The square root of 249711377 is about 15802.2586043894. The cubic root of 249711377 is about 629.7180034650.

The spelling of 249711377 in words is "two hundred forty-nine million, seven hundred eleven thousand, three hundred seventy-seven".