190869407 has 2 divisors, whose sum is σ = 190869408. Its totient is φ = 190869406.

The previous prime is 190869331. The next prime is 190869467. The reversal of 190869407 is 704968091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 190869407 - 2²⁰ = 189820831 is a prime.

It is a super-2 number, since 2×190869407² = 72862261057063298, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190869467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95434703 + 95434704.

It is an arithmetic number, because the mean of its divisors is an integer number (95434704).

Almost surely, 2^190869407 is an apocalyptic number.

190869407 is a deficient number, since it is larger than the sum of its proper divisors (1).

190869407 is an equidigital number, since it uses as much as digits as its factorization.

190869407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 190869407 is about 13815.5494642812. The cubic root of 190869407 is about 575.7652389746.

The spelling of 190869407 in words is "one hundred ninety million, eight hundred sixty-nine thousand, four hundred seven".