1396679057 has 2 divisors, whose sum is σ = 1396679058. Its totient is φ = 1396679056.

The previous prime is 1396679033. The next prime is 1396679077. The reversal of 1396679057 is 7509766931.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1368334081 + 28344976 = 36991^2 + 5324^2 .

It is a cyclic number.

It is not a de Polignac number, because 1396679057 - 2⁶ = 1396678993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1396679027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698339528 + 698339529.

It is an arithmetic number, because the mean of its divisors is an integer number (698339529).

Almost surely, 2^1396679057 is an apocalyptic number.

It is an amenable number.

1396679057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396679057 is an equidigital number, since it uses as much as digits as its factorization.

1396679057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2143260, while the sum is 53.

The square root of 1396679057 is about 37372.1695516865. The cubic root of 1396679057 is about 1117.8036935998.

The spelling of 1396679057 in words is "one billion, three hundred ninety-six million, six hundred seventy-nine thousand, fifty-seven".