199471026 has 16 divisors (see below), whose sum is σ = 402084864. Its totient is φ = 65966544.

The previous prime is 199471009. The next prime is 199471039. The reversal of 199471026 is 620174991.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130125 + ... + 131648.

It is an arithmetic number, because the mean of its divisors is an integer number (25130304).

Almost surely, 2^199471026 is an apocalyptic number.

199471026 is an abundant number, since it is smaller than the sum of its proper divisors (202613838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199471026 is a wasteful number, since it uses less digits than its factorization.

199471026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261905.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 199471026 is about 14123.4211861008. The cubic root of 199471026 is about 584.2875159762.

The spelling of 199471026 in words is "one hundred ninety-nine million, four hundred seventy-one thousand, twenty-six".