199438855 has 24 divisors (see below), whose sum is σ = 300648096. Its totient is φ = 124322880.

The previous prime is 199438807. The next prime is 199438861. The reversal of 199438855 is 558834991.

199438855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 199438855 - 2¹⁷ = 199307783 is a prime.

It is a super-2 number, since 2×199438855² = 79551713767422050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19312 + ... + 27781.

It is an arithmetic number, because the mean of its divisors is an integer number (12527004).

Almost surely, 2^199438855 is an apocalyptic number.

199438855 is a deficient number, since it is larger than the sum of its proper divisors (101209241).

199438855 is a wasteful number, since it uses less digits than its factorization.

199438855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47127 (or 47116 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 52.

The square root of 199438855 is about 14122.2822164125. The cubic root of 199438855 is about 584.2561026850.

The spelling of 199438855 in words is "one hundred ninety-nine million, four hundred thirty-eight thousand, eight hundred fifty-five".