199880954 has 32 divisors (see below), whose sum is σ = 372314880. Its totient is φ = 78365952.

The previous prime is 199880953. The next prime is 199880977. The reversal of 199880954 is 459088991.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 199880896 and 199880905.

It is not an unprimeable number, because it can be changed into a prime (199880953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15707 + ... + 25425.

It is an arithmetic number, because the mean of its divisors is an integer number (11634840).

Almost surely, 2^199880954 is an apocalyptic number.

199880954 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

199880954 is a deficient number, since it is larger than the sum of its proper divisors (172433926).

199880954 is a wasteful number, since it uses less digits than its factorization.

199880954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9854.

The product of its (nonzero) digits is 933120, while the sum is 53.

The square root of 199880954 is about 14137.9260855332. The cubic root of 199880954 is about 584.6874937414.

The spelling of 199880954 in words is "one hundred ninety-nine million, eight hundred eighty thousand, nine hundred fifty-four".