388691149401 has 27 divisors (see below), whose sum is σ = 569656412533. Its totient is φ = 255390467640.

The previous prime is 388691149373. The next prime is 388691149421. The reversal of 388691149401 is 104941196883.

The square root of 388691149401 is 623451.

It is a perfect power (a square), and thus also a powerful number.

388691149401 is a `hidden beast` number, since 3 + 8 + 8 + 6 + 91 + 149 + 401 = 666.

It is not a de Polignac number, because 388691149401 - 2⁹ = 388691148889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388691149421) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 132793600 + ... + 132796526.

Almost surely, 2^388691149401 is an apocalyptic number.

388691149401 is the 623451-st square number.

388691149401 is the 311726-th centered octagonal number.

It is an amenable number.

388691149401 is a deficient number, since it is larger than the sum of its proper divisors (180965263132).

388691149401 is an frugal number, since it uses more digits than its factorization.

388691149401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6002 (or 3001 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The spelling of 388691149401 in words is "three hundred eighty-eight billion, six hundred ninety-one million, one hundred forty-nine thousand, four hundred one".