1387892 has 12 divisors (see below), whose sum is σ = 2649696. Its totient is φ = 630840.

The previous prime is 1387879. The next prime is 1387913. The reversal of 1387892 is 2987831.

It is a d-powerful number, because it can be written as 1 + 3 + 8 + 7⁷ + 8⁵ + 9⁶ + 2⁷ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15728 + ... + 15815.

It is an arithmetic number, because the mean of its divisors is an integer number (220808).

2^1387892 is an apocalyptic number.

It is an amenable number.

1387892 is a deficient number, since it is larger than the sum of its proper divisors (1261804).

1387892 is a wasteful number, since it uses less digits than its factorization.

1387892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31558 (or 31556 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The square root of 1387892 is about 1178.0882819212. The cubic root of 1387892 is about 111.5454579471.

The spelling of 1387892 in words is "one million, three hundred eighty-seven thousand, eight hundred ninety-two".