247249927 has 2 divisors, whose sum is σ = 247249928. Its totient is φ = 247249926.

The previous prime is 247249913. The next prime is 247249949. The reversal of 247249927 is 729942742.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 247249927 - 2¹¹ = 247247879 is a prime.

It is a super-2 number, since 2×247249927² = 122265052803010658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247249987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123624963 + 123624964.

It is an arithmetic number, because the mean of its divisors is an integer number (123624964).

Almost surely, 2^247249927 is an apocalyptic number.

247249927 is a deficient number, since it is larger than the sum of its proper divisors (1).

247249927 is an equidigital number, since it uses as much as digits as its factorization.

247249927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 247249927 is about 15724.1828722513. The cubic root of 247249927 is about 627.6420863095.

The spelling of 247249927 in words is "two hundred forty-seven million, two hundred forty-nine thousand, nine hundred twenty-seven".