1387115 has 8 divisors (see below), whose sum is σ = 1762560. Its totient is φ = 1044352.

The previous prime is 1387109. The next prime is 1387117. The reversal of 1387115 is 5117831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1387115 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387117) 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 7 ways as a sum of consecutive naturals, for example, 8075 + ... + 8244.

It is an arithmetic number, because the mean of its divisors is an integer number (220320).

2^1387115 is an apocalyptic number.

1387115 is a deficient number, since it is larger than the sum of its proper divisors (375445).

1387115 is a wasteful number, since it uses less digits than its factorization.

1387115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16341.

The product of its digits is 840, while the sum is 26.

The square root of 1387115 is about 1177.7584642022. The cubic root of 1387115 is about 111.5246381235.

The spelling of 1387115 in words is "one million, three hundred eighty-seven thousand, one hundred fifteen".