1399982767 has 2 divisors, whose sum is σ = 1399982768. Its totient is φ = 1399982766.

The previous prime is 1399982741. The next prime is 1399982783. The reversal of 1399982767 is 7672899931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1399982767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1399932767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699991383 + 699991384.

It is an arithmetic number, because the mean of its divisors is an integer number (699991384).

Almost surely, 2^1399982767 is an apocalyptic number.

1399982767 is a deficient number, since it is larger than the sum of its proper divisors (1).

1399982767 is an equidigital number, since it uses as much as digits as its factorization.

1399982767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10287648, while the sum is 61.

The square root of 1399982767 is about 37416.3435813817. The cubic root of 1399982767 is about 1118.6843519753.

The spelling of 1399982767 in words is "one billion, three hundred ninety-nine million, nine hundred eighty-two thousand, seven hundred sixty-seven".