399896434 has 8 divisors (see below), whose sum is σ = 685536768. Its totient is φ = 171384180.

The previous prime is 399896429. The next prime is 399896437. The reversal of 399896434 is 434698993.

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 (399896437) 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, 14282002 + ... + 14282029.

It is an arithmetic number, because the mean of its divisors is an integer number (85692096).

Almost surely, 2^399896434 is an apocalyptic number.

399896434 is a deficient number, since it is larger than the sum of its proper divisors (285640334).

399896434 is a wasteful number, since it uses less digits than its factorization.

399896434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28564040.

The product of its digits is 5038848, while the sum is 55.

The square root of 399896434 is about 19997.4106823859. The cubic root of 399896434 is about 736.7427041714.

The spelling of 399896434 in words is "three hundred ninety-nine million, eight hundred ninety-six thousand, four hundred thirty-four".