199099901 has 16 divisors (see below), whose sum is σ = 267324288. Its totient is φ = 143208000.

The previous prime is 199099871. The next prime is 199099919. The reversal of 199099901 is 109990991.

It is not a de Polignac number, because 199099901 - 2⁶ = 199099837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199099921) 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, 98450 + ... + 100451.

It is an arithmetic number, because the mean of its divisors is an integer number (16707768).

Almost surely, 2^199099901 is an apocalyptic number.

199099901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

199099901 is a deficient number, since it is larger than the sum of its proper divisors (68224387).

199099901 is a wasteful number, since it uses less digits than its factorization.

199099901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198932.

The product of its (nonzero) digits is 59049, while the sum is 47.

The square root of 199099901 is about 14110.2764324445. The cubic root of 199099901 is about 583.9249264305.

The spelling of 199099901 in words is "one hundred ninety-nine million, ninety-nine thousand, nine hundred one".