394309877 has 16 divisors (see below), whose sum is σ = 435431808. Its totient is φ = 354818880.

The previous prime is 394309859. The next prime is 394309889. The reversal of 394309877 is 778903493.

It is not a de Polignac number, because 394309877 - 2²⁰ = 393261301 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 (394309847) 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, 110552 + ... + 114062.

It is an arithmetic number, because the mean of its divisors is an integer number (27214488).

Almost surely, 2^394309877 is an apocalyptic number.

It is an amenable number.

394309877 is a deficient number, since it is larger than the sum of its proper divisors (41121931).

394309877 is a wasteful number, since it uses less digits than its factorization.

394309877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The square root of 394309877 is about 19857.2373959723. The cubic root of 394309877 is about 733.2958355253.

The spelling of 394309877 in words is "three hundred ninety-four million, three hundred nine thousand, eight hundred seventy-seven".