393912434 has 8 divisors (see below), whose sum is σ = 606838188. Its totient is φ = 191633040.

The previous prime is 393912433. The next prime is 393912437. The reversal of 393912434 is 434219393.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 393903409 + 9025 = 19847^2 + 95^2 .

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 (393912433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2661497 + ... + 2661644.

Almost surely, 2^393912434 is an apocalyptic number.

393912434 is a deficient number, since it is larger than the sum of its proper divisors (212925754).

393912434 is a wasteful number, since it uses less digits than its factorization.

393912434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5323180.

The product of its digits is 69984, while the sum is 38.

The square root of 393912434 is about 19847.2273630349. The cubic root of 393912434 is about 733.0493785394.

The spelling of 393912434 in words is "three hundred ninety-three million, nine hundred twelve thousand, four hundred thirty-four".