197402099 has 2 divisors, whose sum is σ = 197402100. Its totient is φ = 197402098.

The previous prime is 197402087. The next prime is 197402143. The reversal of 197402099 is 990204791.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 197402099 - 2⁴ = 197402083 is a prime.

It is not a weakly prime, because it can be changed into another prime (197402999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98701049 + 98701050.

It is an arithmetic number, because the mean of its divisors is an integer number (98701050).

Almost surely, 2^197402099 is an apocalyptic number.

197402099 is a deficient number, since it is larger than the sum of its proper divisors (1).

197402099 is an equidigital number, since it uses as much as digits as its factorization.

197402099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 197402099 is about 14049.9857295301. The cubic root of 197402099 is about 582.2604013770.

The spelling of 197402099 in words is "one hundred ninety-seven million, four hundred two thousand, ninety-nine".