247380407 has 2 divisors, whose sum is σ = 247380408. Its totient is φ = 247380406.

The previous prime is 247380389. The next prime is 247380443. The reversal of 247380407 is 704083742.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 247380407 - 2²⁰ = 246331831 is a prime.

It is a super-2 number, since 2×247380407² = 122394131534971298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247380487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123690203 + 123690204.

It is an arithmetic number, because the mean of its divisors is an integer number (123690204).

Almost surely, 2^247380407 is an apocalyptic number.

247380407 is a deficient number, since it is larger than the sum of its proper divisors (1).

247380407 is an equidigital number, since it uses as much as digits as its factorization.

247380407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 247380407 is about 15728.3313482391. The cubic root of 247380407 is about 627.7524743943.

The spelling of 247380407 in words is "two hundred forty-seven million, three hundred eighty thousand, four hundred seven".