1390162979 has 2 divisors, whose sum is σ = 1390162980. Its totient is φ = 1390162978.

The previous prime is 1390162973. The next prime is 1390163009. The reversal of 1390162979 is 9792610931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1390162979 - 2²⁴ = 1373385763 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1390162973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695081489 + 695081490.

It is an arithmetic number, because the mean of its divisors is an integer number (695081490).

Almost surely, 2^1390162979 is an apocalyptic number.

1390162979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1390162979 is an equidigital number, since it uses as much as digits as its factorization.

1390162979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183708, while the sum is 47.

The square root of 1390162979 is about 37284.8894191736. The cubic root of 1390162979 is about 1116.0626463615.

The spelling of 1390162979 in words is "one billion, three hundred ninety million, one hundred sixty-two thousand, nine hundred seventy-nine".