2744397247 has 2 divisors, whose sum is σ = 2744397248. Its totient is φ = 2744397246.

The previous prime is 2744397239. The next prime is 2744397277. The reversal of 2744397247 is 7427934472.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2744397247 - 2³ = 2744397239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2744397247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2744397277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1372198623 + 1372198624.

It is an arithmetic number, because the mean of its divisors is an integer number (1372198624).

Almost surely, 2^2744397247 is an apocalyptic number.

2744397247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2744397247 is an equidigital number, since it uses as much as digits as its factorization.

2744397247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2370816, while the sum is 49.

The square root of 2744397247 is about 52386.9950178477. The cubic root of 2744397247 is about 1400.0675557537.

The spelling of 2744397247 in words is "two billion, seven hundred forty-four million, three hundred ninety-seven thousand, two hundred forty-seven".