399435605 has 8 divisors (see below), whose sum is σ = 487447200. Its totient is φ = 314132176.

The previous prime is 399435583. The next prime is 399435607. The reversal of 399435605 is 506534993.

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

It is a cyclic number.

It is not a de Polignac number, because 399435605 - 2⁶ = 399435541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399435607) 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 7 ways as a sum of consecutive naturals, for example, 676715 + ... + 677304.

It is an arithmetic number, because the mean of its divisors is an integer number (60930900).

Almost surely, 2^399435605 is an apocalyptic number.

It is an amenable number.

399435605 is a deficient number, since it is larger than the sum of its proper divisors (88011595).

399435605 is a wasteful number, since it uses less digits than its factorization.

399435605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354083.

The product of its (nonzero) digits is 437400, while the sum is 44.

The square root of 399435605 is about 19985.8851442712. The cubic root of 399435605 is about 736.4595951187.

The spelling of 399435605 in words is "three hundred ninety-nine million, four hundred thirty-five thousand, six hundred five".