247364449 has 2 divisors, whose sum is σ = 247364450. Its totient is φ = 247364448.

The previous prime is 247364443. The next prime is 247364459. The reversal of 247364449 is 944463742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236175424 + 11189025 = 15368^2 + 3345^2 .

It is a cyclic number.

It is not a de Polignac number, because 247364449 - 2³ = 247364441 is a prime.

It is a super-2 number, since 2×247364449² = 122378341258147202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (247364441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123682224 + 123682225.

It is an arithmetic number, because the mean of its divisors is an integer number (123682225).

Almost surely, 2^247364449 is an apocalyptic number.

It is an amenable number.

247364449 is a deficient number, since it is larger than the sum of its proper divisors (1).

247364449 is an equidigital number, since it uses as much as digits as its factorization.

247364449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 43.

The square root of 247364449 is about 15727.8240389445. The cubic root of 247364449 is about 627.7389757647.

The spelling of 247364449 in words is "two hundred forty-seven million, three hundred sixty-four thousand, four hundred forty-nine".