1388937 has 8 divisors (see below), whose sum is σ = 2020320. Its totient is φ = 841760.

The previous prime is 1388927. The next prime is 1388941. The reversal of 1388937 is 7398831.

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 1388937 - 2⁶ = 1388873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1388895 and 1388904.

It is not an unprimeable number, because it can be changed into a prime (1388927) 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, 21012 + ... + 21077.

It is an arithmetic number, because the mean of its divisors is an integer number (252540).

2^1388937 is an apocalyptic number.

It is an amenable number.

1388937 is a deficient number, since it is larger than the sum of its proper divisors (631383).

1388937 is a wasteful number, since it uses less digits than its factorization.

1388937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42103.

The product of its digits is 36288, while the sum is 39.

The square root of 1388937 is about 1178.5317136166. The cubic root of 1388937 is about 111.5734466187.

The spelling of 1388937 in words is "one million, three hundred eighty-eight thousand, nine hundred thirty-seven".