394533888 has 132 divisors (see below), whose sum is σ = 1223729352. Its totient is φ = 112680960.

The previous prime is 394533883. The next prime is 394533889. The reversal of 394533888 is 888335493.

It is a self number, because there is not a number n which added to its sum of digits gives 394533888.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394533883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149218 + ... + 151838.

Almost surely, 2^394533888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394533888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (611864676).

394533888 is an abundant number, since it is smaller than the sum of its proper divisors (829195464).

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

394533888 is a wasteful number, since it uses less digits than its factorization.

394533888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658 (or 2633 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 51.

The square root of 394533888 is about 19862.8771329835. The cubic root of 394533888 is about 733.4346732311.

The spelling of 394533888 in words is "three hundred ninety-four million, five hundred thirty-three thousand, eight hundred eighty-eight".