199441551 has 8 divisors (see below), whose sum is σ = 268362160. Its totient is φ = 131740992.

The previous prime is 199441511. The next prime is 199441553. The reversal of 199441551 is 155144991.

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

It is not a de Polignac number, because 199441551 - 2²⁶ = 132332687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199441553) 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 7 ways as a sum of consecutive naturals, for example, 304630 + ... + 305283.

It is an arithmetic number, because the mean of its divisors is an integer number (33545270).

Almost surely, 2^199441551 is an apocalyptic number.

199441551 is a deficient number, since it is larger than the sum of its proper divisors (68920609).

199441551 is a wasteful number, since it uses less digits than its factorization.

199441551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610025.

The product of its digits is 32400, while the sum is 39.

The square root of 199441551 is about 14122.3776680841. The cubic root of 199441551 is about 584.2587353170.

The spelling of 199441551 in words is "one hundred ninety-nine million, four hundred forty-one thousand, five hundred fifty-one".