394025144 has 32 divisors (see below), whose sum is σ = 775595520. Its totient is φ = 187303776.

The previous prime is 394025143. The next prime is 394025147. The reversal of 394025144 is 441520493.

It is a self number, because there is not a number n which added to its sum of digits gives 394025144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394025143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24317 + ... + 37139.

It is an arithmetic number, because the mean of its divisors is an integer number (24237360).

Almost surely, 2^394025144 is an apocalyptic number.

It is an amenable number.

394025144 is a deficient number, since it is larger than the sum of its proper divisors (381570376).

394025144 is a wasteful number, since it uses less digits than its factorization.

394025144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13019 (or 13015 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 394025144 is about 19850.0665993845. The cubic root of 394025144 is about 733.1192875762.

The spelling of 394025144 in words is "three hundred ninety-four million, twenty-five thousand, one hundred forty-four".