1387407 has 8 divisors (see below), whose sum is σ = 2114176. Its totient is φ = 792792.

The previous prime is 1387403. The next prime is 1387417. The reversal of 1387407 is 7047831.

It is a happy number.

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

It is not a de Polignac number, because 1387407 - 2² = 1387403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33013 + ... + 33054.

It is an arithmetic number, because the mean of its divisors is an integer number (264272).

2^1387407 is an apocalyptic number.

1387407 is a deficient number, since it is larger than the sum of its proper divisors (726769).

1387407 is an equidigital number, since it uses as much as digits as its factorization.

1387407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66077.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 1387407 is about 1177.8824219760. The cubic root of 1387407 is about 111.5324632160.

The spelling of 1387407 in words is "one million, three hundred eighty-seven thousand, four hundred seven".