1397401381959 has 16 divisors (see below), whose sum is σ = 2075830295040. Its totient is φ = 828890567360.

The previous prime is 1397401381939. The next prime is 1397401382023. The reversal of 1397401381959 is 9591831047931.

It is a cyclic number.

It is not a de Polignac number, because 1397401381959 - 2⁸ = 1397401381703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397401381939) 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, 450482454 + ... + 450485555.

It is an arithmetic number, because the mean of its divisors is an integer number (129739393440).

Almost surely, 2^{1397401381959} is an apocalyptic number.

1397401381959 is a deficient number, since it is larger than the sum of its proper divisors (678428913081).

1397401381959 is a wasteful number, since it uses less digits than its factorization.

1397401381959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900968070.

The product of its (nonzero) digits is 7348320, while the sum is 60.

The spelling of 1397401381959 in words is "one trillion, three hundred ninety-seven billion, four hundred one million, three hundred eighty-one thousand, nine hundred fifty-nine".