199968470 has 32 divisors (see below), whose sum is σ = 394958592. Its totient is φ = 72438912.

The previous prime is 199968469. The next prime is 199968479. The reversal of 199968470 is 74869991.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199968479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7622 + ... + 21401.

It is an arithmetic number, because the mean of its divisors is an integer number (12342456).

Almost surely, 2^199968470 is an apocalyptic number.

199968470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199968470 is a deficient number, since it is larger than the sum of its proper divisors (194990122).

199968470 is a wasteful number, since it uses less digits than its factorization.

199968470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29096.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 199968470 is about 14141.0208259517. The cubic root of 199968470 is about 584.7728146011.

The spelling of 199968470 in words is "one hundred ninety-nine million, nine hundred sixty-eight thousand, four hundred seventy".