199995954 has 8 divisors (see below), whose sum is σ = 399991920. Its totient is φ = 66665316.

The previous prime is 199995953. The next prime is 199995959. The reversal of 199995954 is 459599991.

It is a sphenic number, since it is the product of 3 distinct primes.

199995954 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (199995953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16666324 + ... + 16666335.

It is an arithmetic number, because the mean of its divisors is an integer number (49998990).

Almost surely, 2^199995954 is an apocalyptic number.

199995954 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

199995954 is a wasteful number, since it uses less digits than its factorization.

199995954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33332664.

The product of its digits is 5904900, while the sum is 60.

The square root of 199995954 is about 14141.9925753056. The cubic root of 199995954 is about 584.7996040907.

The spelling of 199995954 in words is "one hundred ninety-nine million, nine hundred ninety-five thousand, nine hundred fifty-four".