2647272391 has 2 divisors, whose sum is σ = 2647272392. Its totient is φ = 2647272390.

The previous prime is 2647272371. The next prime is 2647272403. The reversal of 2647272391 is 1932727462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2647272391 - 2¹³ = 2647264199 is a prime.

It is a super-2 number, since 2×2647272391² = 14016102224301713762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2647272371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1323636195 + 1323636196.

It is an arithmetic number, because the mean of its divisors is an integer number (1323636196).

Almost surely, 2^2647272391 is an apocalyptic number.

2647272391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2647272391 is an equidigital number, since it uses as much as digits as its factorization.

2647272391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 43.

The square root of 2647272391 is about 51451.6510036364. The cubic root of 2647272391 is about 1383.3525557046.

The spelling of 2647272391 in words is "two billion, six hundred forty-seven million, two hundred seventy-two thousand, three hundred ninety-one".