199376897 has 4 divisors (see below), whose sum is σ = 199406256. Its totient is φ = 199347540.

The previous prime is 199376887. The next prime is 199376909. The reversal of 199376897 is 798673991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 798673991 = 17 ⋅46980823.

It is a cyclic number.

It is not a de Polignac number, because 199376897 - 2¹² = 199372801 is a prime.

It is a super-2 number, since 2×199376897² = 79502294114697218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199376887) 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, 1322 + ... + 20012.

It is an arithmetic number, because the mean of its divisors is an integer number (49851564).

It is a Proth number, since it is equal to 12169 ⋅ 2¹⁴ + 1 and 12169 < 2¹⁴.

Almost surely, 2^199376897 is an apocalyptic number.

It is an amenable number.

199376897 is a deficient number, since it is larger than the sum of its proper divisors (29359).

199376897 is a wasteful number, since it uses less digits than its factorization.

199376897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29358.

The product of its digits is 5143824, while the sum is 59.

The square root of 199376897 is about 14120.0884204030. The cubic root of 199376897 is about 584.1955944341.

The spelling of 199376897 in words is "one hundred ninety-nine million, three hundred seventy-six thousand, eight hundred ninety-seven".