1387893 has 16 divisors (see below), whose sum is σ = 2098880. Its totient is φ = 808704.

The previous prime is 1387879. The next prime is 1387913. The reversal of 1387893 is 3987831.

It is not a de Polignac number, because 1387893 - 2⁴ = 1387877 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387823) 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, 196 + ... + 1677.

It is an arithmetic number, because the mean of its divisors is an integer number (131180).

2^1387893 is an apocalyptic number.

1387893 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1387893 is a deficient number, since it is larger than the sum of its proper divisors (710987).

1387893 is a wasteful number, since it uses less digits than its factorization.

1387893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908.

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

The square root of 1387893 is about 1178.0887063375. The cubic root of 1387893 is about 111.5454847372.

The spelling of 1387893 in words is "one million, three hundred eighty-seven thousand, eight hundred ninety-three".