1387307 has 4 divisors (see below), whose sum is σ = 1400880. Its totient is φ = 1373736.

The previous prime is 1387289. The next prime is 1387313. The reversal of 1387307 is 7037831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1387307 - 2¹⁰ = 1386283 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1387307.

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 3 ways as a sum of consecutive naturals, for example, 6632 + ... + 6837.

It is an arithmetic number, because the mean of its divisors is an integer number (350220).

2^1387307 is an apocalyptic number.

1387307 is a deficient number, since it is larger than the sum of its proper divisors (13573).

1387307 is a wasteful number, since it uses less digits than its factorization.

1387307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13572.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 1387307 is about 1177.8399721524. The cubic root of 1387307 is about 111.5297835134.

The spelling of 1387307 in words is "one million, three hundred eighty-seven thousand, three hundred seven".