399850855 has 8 divisors (see below), whose sum is σ = 490030272. Its totient is φ = 313074528.

The previous prime is 399850853. The next prime is 399850859. The reversal of 399850855 is 558058993.

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 399850855 - 2¹ = 399850853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399850853) 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, 850512 + ... + 850981.

It is an arithmetic number, because the mean of its divisors is an integer number (61253784).

Almost surely, 2^399850855 is an apocalyptic number.

399850855 is a deficient number, since it is larger than the sum of its proper divisors (90179417).

399850855 is a wasteful number, since it uses less digits than its factorization.

399850855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701545.

The product of its (nonzero) digits is 1944000, while the sum is 52.

The square root of 399850855 is about 19996.2710273691. The cubic root of 399850855 is about 736.7147125310.

The spelling of 399850855 in words is "three hundred ninety-nine million, eight hundred fifty thousand, eight hundred fifty-five".