1397196912639 has 16 divisors (see below), whose sum is σ = 2081854381824. Its totient is φ = 826132689600.

The previous prime is 1397196912623. The next prime is 1397196912649. The reversal of 1397196912639 is 9362196917931.

It is not a de Polignac number, because 1397196912639 - 2⁴ = 1397196912623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1397196912639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397196912649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 516331579 + ... + 516334284.

It is an arithmetic number, because the mean of its divisors is an integer number (130115898864).

Almost surely, 2^{1397196912639} is an apocalyptic number.

1397196912639 is a deficient number, since it is larger than the sum of its proper divisors (684657469185).

1397196912639 is a wasteful number, since it uses less digits than its factorization.

1397196912639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032665918.

The product of its digits is 29760696, while the sum is 66.

The spelling of 1397196912639 in words is "one trillion, three hundred ninety-seven billion, one hundred ninety-six million, nine hundred twelve thousand, six hundred thirty-nine".