394192144 has 40 divisors (see below), whose sum is σ = 774200448. Its totient is φ = 194419200.

The previous prime is 394192133. The next prime is 394192151. The reversal of 394192144 is 441291493.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402984 + ... + 403960.

Almost surely, 2^394192144 is an apocalyptic number.

It is an amenable number.

394192144 is a deficient number, since it is larger than the sum of its proper divisors (380008304).

394192144 is a wasteful number, since it uses less digits than its factorization.

394192144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303 (or 1297 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 394192144 is about 19854.2726887690. The cubic root of 394192144 is about 733.2228457969. Note that the first 3 decimals are identical.

The spelling of 394192144 in words is "three hundred ninety-four million, one hundred ninety-two thousand, one hundred forty-four".