1387907 has 4 divisors (see below), whose sum is σ = 1425456. Its totient is φ = 1350360.

The previous prime is 1387879. The next prime is 1387913. The reversal of 1387907 is 7097831.

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 1387907 - 2¹⁰ = 1386883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1387927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18719 + ... + 18792.

It is an arithmetic number, because the mean of its divisors is an integer number (356364).

2^1387907 is an apocalyptic number.

1387907 is a deficient number, since it is larger than the sum of its proper divisors (37549).

1387907 is an equidigital number, since it uses as much as digits as its factorization.

1387907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37548.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 1387907 is about 1178.0946481501. The cubic root of 1387907 is about 111.5458597977.

The spelling of 1387907 in words is "one million, three hundred eighty-seven thousand, nine hundred seven".