399433546 has 8 divisors (see below), whose sum is σ = 610455204. Its totient is φ = 195948480.

The previous prime is 399433519. The next prime is 399433549. The reversal of 399433546 is 645334993.

It can be written as a sum of positive squares in 2 ways, for example, as 395572321 + 3861225 = 19889^2 + 1965^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 399433496 and 399433505.

It is not an unprimeable number, because it can be changed into a prime (399433549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1884015 + ... + 1884226.

Almost surely, 2^399433546 is an apocalyptic number.

399433546 is a deficient number, since it is larger than the sum of its proper divisors (211021658).

399433546 is a wasteful number, since it uses less digits than its factorization.

399433546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3768296.

The product of its digits is 1049760, while the sum is 46.

The square root of 399433546 is about 19985.8336328510. The cubic root of 399433546 is about 736.4583296891.

The spelling of 399433546 in words is "three hundred ninety-nine million, four hundred thirty-three thousand, five hundred forty-six".