393972914 has 8 divisors (see below), whose sum is σ = 594261360. Its totient is φ = 195885796.

The previous prime is 393972907. The next prime is 393972919. The reversal of 393972914 is 419279393.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (393972919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549884 + ... + 550599.

It is an arithmetic number, because the mean of its divisors is an integer number (74282670).

Almost surely, 2^393972914 is an apocalyptic number.

393972914 is a deficient number, since it is larger than the sum of its proper divisors (200288446).

393972914 is a wasteful number, since it uses less digits than its factorization.

393972914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100664.

The product of its digits is 367416, while the sum is 47.

The square root of 393972914 is about 19848.7509430694. The cubic root of 393972914 is about 733.0868932709.

The spelling of 393972914 in words is "three hundred ninety-three million, nine hundred seventy-two thousand, nine hundred fourteen".