190220399 has 2 divisors, whose sum is σ = 190220400. Its totient is φ = 190220398.

The previous prime is 190220389. The next prime is 190220447. The reversal of 190220399 is 993022091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 190220399 - 2⁴ = 190220383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190220389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95110199 + 95110200.

It is an arithmetic number, because the mean of its divisors is an integer number (95110200).

Almost surely, 2^190220399 is an apocalyptic number.

190220399 is a deficient number, since it is larger than the sum of its proper divisors (1).

190220399 is an equidigital number, since it uses as much as digits as its factorization.

190220399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 190220399 is about 13792.0411469804. The cubic root of 190220399 is about 575.1119116767. Note that the first 3 decimals are identical.

The spelling of 190220399 in words is "one hundred ninety million, two hundred twenty thousand, three hundred ninety-nine".