1396939039 has 2 divisors, whose sum is σ = 1396939040. Its totient is φ = 1396939038.

The previous prime is 1396939031. The next prime is 1396939051. The reversal of 1396939039 is 9309396931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1396939039 - 2³ = 1396939031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1396939031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698469519 + 698469520.

It is an arithmetic number, because the mean of its divisors is an integer number (698469520).

Almost surely, 2^1396939039 is an apocalyptic number.

1396939039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396939039 is an equidigital number, since it uses as much as digits as its factorization.

1396939039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1062882, while the sum is 52.

The square root of 1396939039 is about 37375.6476733180. The cubic root of 1396939039 is about 1117.8730463999.

The spelling of 1396939039 in words is "one billion, three hundred ninety-six million, nine hundred thirty-nine thousand, thirty-nine".