1388427 has 16 divisors (see below), whose sum is σ = 1943040. Its totient is φ = 880992.

The previous prime is 1388419. The next prime is 1388449. The reversal of 1388427 is 7248831.

It is not a de Polignac number, because 1388427 - 2³ = 1388419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1388467) 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, 5949 + ... + 6177.

It is an arithmetic number, because the mean of its divisors is an integer number (121440).

2^1388427 is an apocalyptic number.

1388427 is a deficient number, since it is larger than the sum of its proper divisors (554613).

1388427 is a wasteful number, since it uses less digits than its factorization.

1388427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322.

The product of its digits is 10752, while the sum is 33.

The square root of 1388427 is about 1178.3153228232. The cubic root of 1388427 is about 111.5597888301.

The spelling of 1388427 in words is "one million, three hundred eighty-eight thousand, four hundred twenty-seven".