1387377 has 6 divisors (see below), whose sum is σ = 2004002. Its totient is φ = 924912.

The previous prime is 1387367. The next prime is 1387403. The reversal of 1387377 is 7737831.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 998001 + 389376 = 999^2 + 624^2 .

It is not a de Polignac number, because 1387377 - 2⁶ = 1387313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1387327) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 77068 + ... + 77085.

2^1387377 is an apocalyptic number.

It is an amenable number.

1387377 is a deficient number, since it is larger than the sum of its proper divisors (616625).

1387377 is a wasteful number, since it uses less digits than its factorization.

1387377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154159 (or 154156 counting only the distinct ones).

The product of its digits is 24696, while the sum is 36.

The square root of 1387377 is about 1177.8696871895. The cubic root of 1387377 is about 111.5316593187.

It can be divided in two parts, 1387 and 377, that added together give a square (1764 = 42²).

The spelling of 1387377 in words is "one million, three hundred eighty-seven thousand, three hundred seventy-seven".