197398799 has 4 divisors (see below), whose sum is σ = 212583336. Its totient is φ = 182214264.

The previous prime is 197398763. The next prime is 197398819. The reversal of 197398799 is 997893791.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197398799 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 (197398199) 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, 7592249 + ... + 7592274.

It is an arithmetic number, because the mean of its divisors is an integer number (53145834).

Almost surely, 2^197398799 is an apocalyptic number.

197398799 is a deficient number, since it is larger than the sum of its proper divisors (15184537).

197398799 is a wasteful number, since it uses less digits than its factorization.

197398799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15184536.

The product of its digits is 7715736, while the sum is 62.

The square root of 197398799 is about 14049.8682911976. The cubic root of 197398799 is about 582.2571567812.

The spelling of 197398799 in words is "one hundred ninety-seven million, three hundred ninety-eight thousand, seven hundred ninety-nine".