394796687 has 16 divisors (see below), whose sum is σ = 431001600. Its totient is φ = 360249120.

The previous prime is 394796681. The next prime is 394796711. The reversal of 394796687 is 786697493.

It is not a de Polignac number, because 394796687 - 2¹² = 394792591 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 (394796681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133418 + ... + 136344.

It is an arithmetic number, because the mean of its divisors is an integer number (26937600).

Almost surely, 2^394796687 is an apocalyptic number.

394796687 is a deficient number, since it is larger than the sum of its proper divisors (36204913).

394796687 is a wasteful number, since it uses less digits than its factorization.

394796687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206.

The product of its digits is 13716864, while the sum is 59.

The square root of 394796687 is about 19869.4913623877. The cubic root of 394796687 is about 733.5974840182.

The spelling of 394796687 in words is "three hundred ninety-four million, seven hundred ninety-six thousand, six hundred eighty-seven".