1396973507 has 2 divisors, whose sum is σ = 1396973508. Its totient is φ = 1396973506.

The previous prime is 1396973411. The next prime is 1396973549. The reversal of 1396973507 is 7053796931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1396973507 - 2²⁰ = 1395924931 is a prime.

It is not a weakly prime, because it can be changed into another prime (1396973707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698486753 + 698486754.

It is an arithmetic number, because the mean of its divisors is an integer number (698486754).

Almost surely, 2^1396973507 is an apocalyptic number.

1396973507 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396973507 is an equidigital number, since it uses as much as digits as its factorization.

1396973507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1071630, while the sum is 50.

The square root of 1396973507 is about 37376.1087728511. The cubic root of 1396973507 is about 1117.8822404377.

The spelling of 1396973507 in words is "one billion, three hundred ninety-six million, nine hundred seventy-three thousand, five hundred seven".