199290622439 has 2 divisors, whose sum is σ = 199290622440. Its totient is φ = 199290622438.

The previous prime is 199290622429. The next prime is 199290622459. The reversal of 199290622439 is 934226092991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199290622439 - 2¹² = 199290618343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199290622409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99645311219 + 99645311220.

It is an arithmetic number, because the mean of its divisors is an integer number (99645311220).

Almost surely, 2^199290622439 is an apocalyptic number.

199290622439 is a deficient number, since it is larger than the sum of its proper divisors (1).

199290622439 is an equidigital number, since it uses as much as digits as its factorization.

199290622439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3779136, while the sum is 56.

The spelling of 199290622439 in words is "one hundred ninety-nine billion, two hundred ninety million, six hundred twenty-two thousand, four hundred thirty-nine".