199999470 has 32 divisors (see below), whose sum is σ = 523635840. Its totient is φ = 48484640.

The previous prime is 199999451. The next prime is 199999483. The reversal of 199999470 is 74999991.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 199999470.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302700 + ... + 303359.

It is an arithmetic number, because the mean of its divisors is an integer number (16363620).

Almost surely, 2^199999470 is an apocalyptic number.

199999470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199999470 is an abundant number, since it is smaller than the sum of its proper divisors (323636370).

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

199999470 is a wasteful number, since it uses less digits than its factorization.

199999470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606080.

The product of its (nonzero) digits is 1653372, while the sum is 57.

The square root of 199999470 is about 14142.1168853888. The cubic root of 199999470 is about 584.8030310656.

The spelling of 199999470 in words is "one hundred ninety-nine million, nine hundred ninety-nine thousand, four hundred seventy".