247514389 has 2 divisors, whose sum is σ = 247514390. Its totient is φ = 247514388.

The previous prime is 247514353. The next prime is 247514411. The reversal of 247514389 is 983415742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129618225 + 117896164 = 11385^2 + 10858^2 .

It is a cyclic number.

It is not a de Polignac number, because 247514389 - 2¹¹ = 247512341 is a prime.

It is a super-2 number, since 2×247514389² = 122526745524086642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247514329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123757194 + 123757195.

It is an arithmetic number, because the mean of its divisors is an integer number (123757195).

Almost surely, 2^247514389 is an apocalyptic number.

It is an amenable number.

247514389 is a deficient number, since it is larger than the sum of its proper divisors (1).

247514389 is an equidigital number, since it uses as much as digits as its factorization.

247514389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 43.

The square root of 247514389 is about 15732.5900283456. The cubic root of 247514389 is about 627.8657848396.

The spelling of 247514389 in words is "two hundred forty-seven million, five hundred fourteen thousand, three hundred eighty-nine".