394260836 has 12 divisors (see below), whose sum is σ = 691732860. Its totient is φ = 196622880.

The previous prime is 394260791. The next prime is 394260847. The reversal of 394260836 is 638062493.

It can be written as a sum of positive squares in 2 ways, for example, as 93238336 + 301022500 = 9656^2 + 17350^2 .

It is a junction number, because it is equal to n+sod(n) for n = 394260793 and 394260802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125135 + ... + 128246.

It is an arithmetic number, because the mean of its divisors is an integer number (57644405).

Almost surely, 2^394260836 is an apocalyptic number.

It is an amenable number.

394260836 is a deficient number, since it is larger than the sum of its proper divisors (297472024).

394260836 is a wasteful number, since it uses less digits than its factorization.

394260836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253774 (or 253772 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 41.

The square root of 394260836 is about 19856.0025181304. The cubic root of 394260836 is about 733.2654338419.

The spelling of 394260836 in words is "three hundred ninety-four million, two hundred sixty thousand, eight hundred thirty-six".