199148897 has 8 divisors (see below), whose sum is σ = 211048416. Its totient is φ = 187269952.

The previous prime is 199148879. The next prime is 199148903. The reversal of 199148897 is 798841991.

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

It is a cyclic number.

It is not a de Polignac number, because 199148897 - 2¹² = 199144801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199148197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17738 + ... + 26700.

It is an arithmetic number, because the mean of its divisors is an integer number (26381052).

Almost surely, 2^199148897 is an apocalyptic number.

199148897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

199148897 is a deficient number, since it is larger than the sum of its proper divisors (11899519).

199148897 is a wasteful number, since it uses less digits than its factorization.

199148897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10287.

The product of its digits is 1306368, while the sum is 56.

The square root of 199148897 is about 14112.0125070806. The cubic root of 199148897 is about 583.9728213801.

The spelling of 199148897 in words is "one hundred ninety-nine million, one hundred forty-eight thousand, eight hundred ninety-seven".