1388404488317 has 32 divisors (see below), whose sum is σ = 1761192253440. Its totient is φ = 1063019926080.

The previous prime is 1388404488313. The next prime is 1388404488349. The reversal of 1388404488317 is 7138844048831.

It is not a de Polignac number, because 1388404488317 - 2² = 1388404488313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388404488313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9408023 + ... + 9554459.

It is an arithmetic number, because the mean of its divisors is an integer number (55037257920).

Almost surely, 2^{1388404488317} is an apocalyptic number.

It is an amenable number.

1388404488317 is a deficient number, since it is larger than the sum of its proper divisors (372787765123).

1388404488317 is a wasteful number, since it uses less digits than its factorization.

1388404488317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148601.

The product of its (nonzero) digits is 16515072, while the sum is 59.

The spelling of 1388404488317 in words is "one trillion, three hundred eighty-eight billion, four hundred four million, four hundred eighty-eight thousand, three hundred seventeen".