190421417 has 2 divisors, whose sum is σ = 190421418. Its totient is φ = 190421416.

The previous prime is 190421411. The next prime is 190421423. The reversal of 190421417 is 714124091.

It is a balanced prime because it is at equal distance from previous prime (190421411) and next prime (190421423).

It can be written as a sum of positive squares in only one way, i.e., 181063936 + 9357481 = 13456^2 + 3059^2 .

It is a cyclic number.

It is not a de Polignac number, because 190421417 - 2¹⁰ = 190420393 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 190421417.

It is not a weakly prime, because it can be changed into another prime (190421411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95210708 + 95210709.

It is an arithmetic number, because the mean of its divisors is an integer number (95210709).

Almost surely, 2^190421417 is an apocalyptic number.

It is an amenable number.

190421417 is a deficient number, since it is larger than the sum of its proper divisors (1).

190421417 is an equidigital number, since it uses as much as digits as its factorization.

190421417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 190421417 is about 13799.3266864728. The cubic root of 190421417 is about 575.3144261413.

The spelling of 190421417 in words is "one hundred ninety million, four hundred twenty-one thousand, four hundred seventeen".