387407 has 4 divisors (see below), whose sum is σ = 399936. Its totient is φ = 374880.

The previous prime is 387403. The next prime is 387433. The reversal of 387407 is 704783.

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 387407 - 2² = 387403 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 387407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387403) 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, 6218 + ... + 6279.

It is an arithmetic number, because the mean of its divisors is an integer number (99984).

2³⁸⁷⁴⁰⁷ is an apocalyptic number.

387407 is a deficient number, since it is larger than the sum of its proper divisors (12529).

387407 is a wasteful number, since it uses less digits than its factorization.

387407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12528.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 387407 is about 622.4202760193. The cubic root of 387407 is about 72.8991539257.

The spelling of 387407 in words is "three hundred eighty-seven thousand, four hundred seven".