199435451 has 2 divisors, whose sum is σ = 199435452. Its totient is φ = 199435450.

The previous prime is 199435441. The next prime is 199435459. The reversal of 199435451 is 154534991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199435451 - 2²⁶ = 132326587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 199435399 and 199435408.

It is not a weakly prime, because it can be changed into another prime (199435459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99717725 + 99717726.

It is an arithmetic number, because the mean of its divisors is an integer number (99717726).

Almost surely, 2^199435451 is an apocalyptic number.

199435451 is a deficient number, since it is larger than the sum of its proper divisors (1).

199435451 is an equidigital number, since it uses as much as digits as its factorization.

199435451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 41.

The square root of 199435451 is about 14122.1616971340. The cubic root of 199435451 is about 584.2527786602.

The spelling of 199435451 in words is "one hundred ninety-nine million, four hundred thirty-five thousand, four hundred fifty-one".