1274384399 has 2 divisors, whose sum is σ = 1274384400. Its totient is φ = 1274384398.

The previous prime is 1274384393. The next prime is 1274384431. The reversal of 1274384399 is 9934834721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1274384399 - 2⁸ = 1274384143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1274384393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637192199 + 637192200.

It is an arithmetic number, because the mean of its divisors is an integer number (637192200).

Almost surely, 2^1274384399 is an apocalyptic number.

1274384399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1274384399 is an equidigital number, since it uses as much as digits as its factorization.

1274384399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 50.

The square root of 1274384399 is about 35698.5209637598. The cubic root of 1274384399 is about 1084.1768974502.

The spelling of 1274384399 in words is "one billion, two hundred seventy-four million, three hundred eighty-four thousand, three hundred ninety-nine".