399053434 has 8 divisors (see below), whose sum is σ = 644624820. Its totient is φ = 184178496.

The previous prime is 399053423. The next prime is 399053437. The reversal of 399053434 is 434350993.

It can be written as a sum of positive squares in 2 ways, for example, as 398122209 + 931225 = 19953^2 + 965^2 .

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 (399053437) 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, 7674079 + ... + 7674130.

Almost surely, 2^399053434 is an apocalyptic number.

399053434 is a deficient number, since it is larger than the sum of its proper divisors (245571386).

399053434 is a wasteful number, since it uses less digits than its factorization.

399053434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15348224.

The product of its (nonzero) digits is 174960, while the sum is 40.

The square root of 399053434 is about 19976.3218336109. The cubic root of 399053434 is about 736.2246441805.

The spelling of 399053434 in words is "three hundred ninety-nine million, fifty-three thousand, four hundred thirty-four".