394473624 has 16 divisors (see below), whose sum is σ = 986184120. Its totient is φ = 131491200.

The previous prime is 394473589. The next prime is 394473643. The reversal of 394473624 is 426374493.

It is a happy 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, 8218177 + ... + 8218224.

Almost surely, 2^394473624 is an apocalyptic number.

It is an amenable number.

394473624 is an abundant number, since it is smaller than the sum of its proper divisors (591710496).

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

394473624 is a wasteful number, since it uses less digits than its factorization.

394473624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16436410 (or 16436406 counting only the distinct ones).

The product of its digits is 435456, while the sum is 42.

The square root of 394473624 is about 19861.3600742749. The cubic root of 394473624 is about 733.3973279323.

It can be divided in two parts, 39447 and 3624, that added together give a triangular number (43071 = T₂₉₃).

The spelling of 394473624 in words is "three hundred ninety-four million, four hundred seventy-three thousand, six hundred twenty-four".