199601959 has 2 divisors, whose sum is σ = 199601960. Its totient is φ = 199601958.

The previous prime is 199601923. The next prime is 199601971. The reversal of 199601959 is 959106991.

It is a strong prime.

It is an emirp because it is prime and its reverse (959106991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199601959 - 2¹³ = 199593767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194601959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99800979 + 99800980.

It is an arithmetic number, because the mean of its divisors is an integer number (99800980).

Almost surely, 2^199601959 is an apocalyptic number.

199601959 is a deficient number, since it is larger than the sum of its proper divisors (1).

199601959 is an equidigital number, since it uses as much as digits as its factorization.

199601959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196830, while the sum is 49.

The square root of 199601959 is about 14128.0557402638. The cubic root of 199601959 is about 584.4153303364.

The spelling of 199601959 in words is "one hundred ninety-nine million, six hundred one thousand, nine hundred fifty-nine".