394289886 has 8 divisors (see below), whose sum is σ = 788579784. Its totient is φ = 131429960.

The previous prime is 394289827. The next prime is 394289911. The reversal of 394289886 is 688982493.

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

394289886 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32857485 + ... + 32857496.

It is an arithmetic number, because the mean of its divisors is an integer number (98572473).

Almost surely, 2^394289886 is an apocalyptic number.

394289886 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394289886 is a wasteful number, since it uses less digits than its factorization.

394289886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65714986.

The product of its digits is 5971968, while the sum is 57.

The square root of 394289886 is about 19856.7340214850. The cubic root of 394289886 is about 733.2834429328.

The spelling of 394289886 in words is "three hundred ninety-four million, two hundred eighty-nine thousand, eight hundred eighty-six".