1387976 has 8 divisors (see below), whose sum is σ = 2602470. Its totient is φ = 693984.

The previous prime is 1387961. The next prime is 1387987. The reversal of 1387976 is 6797831.

It can be written as a sum of positive squares in only one way, i.e., 763876 + 624100 = 874^2 + 790^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86741 + ... + 86756.

2^1387976 is an apocalyptic number.

It is an amenable number.

1387976 is a deficient number, since it is larger than the sum of its proper divisors (1214494).

1387976 is a wasteful number, since it uses less digits than its factorization.

1387976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173503 (or 173499 counting only the distinct ones).

The product of its digits is 63504, while the sum is 41.

The square root of 1387976 is about 1178.1239323603. The cubic root of 1387976 is about 111.5477082733.

The spelling of 1387976 in words is "one million, three hundred eighty-seven thousand, nine hundred seventy-six".