1388401 has 8 divisors (see below), whose sum is σ = 1595264. Its totient is φ = 1183680.

The previous prime is 1388393. The next prime is 1388411. The reversal of 1388401 is 1048831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1388401 - 2³ = 1388393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1388411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1276 + ... + 2098.

It is an arithmetic number, because the mean of its divisors is an integer number (199408).

2^1388401 is an apocalyptic number.

It is an amenable number.

1388401 is a deficient number, since it is larger than the sum of its proper divisors (206863).

1388401 is an equidigital number, since it uses as much as digits as its factorization.

1388401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 1388401 is about 1178.3042900711. The cubic root of 1388401 is about 111.5590924611.

The spelling of 1388401 in words is "one million, three hundred eighty-eight thousand, four hundred one".