199424855 has 24 divisors (see below), whose sum is σ = 293039280. Its totient is φ = 129548160.

The previous prime is 199424843. The next prime is 199424899. The reversal of 199424855 is 558424991.

It is a happy number.

It is not a de Polignac number, because 199424855 - 2⁴ = 199424839 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 16766 + ... + 26075.

It is an arithmetic number, because the mean of its divisors is an integer number (12209970).

Almost surely, 2^199424855 is an apocalyptic number.

199424855 is a deficient number, since it is larger than the sum of its proper divisors (93614425).

199424855 is a wasteful number, since it uses less digits than its factorization.

199424855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42879 (or 42872 counting only the distinct ones).

The product of its digits is 518400, while the sum is 47.

The square root of 199424855 is about 14121.7865371206. The cubic root of 199424855 is about 584.2424313656.

The spelling of 199424855 in words is "one hundred ninety-nine million, four hundred twenty-four thousand, eight hundred fifty-five".