199958467 has 2 divisors, whose sum is σ = 199958468. Its totient is φ = 199958466.

The previous prime is 199958443. The next prime is 199958477. The reversal of 199958467 is 764859991.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199958467 is a prime.

It is not a weakly prime, because it can be changed into another prime (199958477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99979233 + 99979234.

It is an arithmetic number, because the mean of its divisors is an integer number (99979234).

Almost surely, 2^199958467 is an apocalyptic number.

199958467 is a deficient number, since it is larger than the sum of its proper divisors (1).

199958467 is an equidigital number, since it uses as much as digits as its factorization.

199958467 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 58.

The square root of 199958467 is about 14140.6671341914. The cubic root of 199958467 is about 584.7630637638.

The spelling of 199958467 in words is "one hundred ninety-nine million, nine hundred fifty-eight thousand, four hundred sixty-seven".