199475745 has 16 divisors (see below), whose sum is σ = 364755840. Its totient is φ = 91188864.

The previous prime is 199475743. The next prime is 199475767. The reversal of 199475745 is 547574991.

It is not a de Polignac number, because 199475745 - 2¹ = 199475743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199475743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 949780 + ... + 949989.

It is an arithmetic number, because the mean of its divisors is an integer number (22797240).

Almost surely, 2^199475745 is an apocalyptic number.

199475745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

199475745 is a deficient number, since it is larger than the sum of its proper divisors (165280095).

199475745 is a wasteful number, since it uses less digits than its factorization.

199475745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899784.

The product of its digits is 1587600, while the sum is 51.

The square root of 199475745 is about 14123.5882480339. The cubic root of 199475745 is about 584.2921235478.

The spelling of 199475745 in words is "one hundred ninety-nine million, four hundred seventy-five thousand, seven hundred forty-five".