1387956 has 12 divisors (see below), whose sum is σ = 3238592. Its totient is φ = 462648.

The previous prime is 1387943. The next prime is 1387961. The reversal of 1387956 is 6597831.

It is a tau number, because it is divible by the number of its divisors (12).

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, 57820 + ... + 57843.

2^1387956 is an apocalyptic number.

It is an amenable number.

1387956 is an abundant number, since it is smaller than the sum of its proper divisors (1850636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1387956 is a wasteful number, since it uses less digits than its factorization.

1387956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115670 (or 115668 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The square root of 1387956 is about 1178.1154442583. The cubic root of 1387956 is about 111.5471724896.

The spelling of 1387956 in words is "one million, three hundred eighty-seven thousand, nine hundred fifty-six".