190391227 has 16 divisors (see below), whose sum is σ = 208774720. Its totient is φ = 172564992.

The previous prime is 190391221. The next prime is 190391251. The reversal of 190391227 is 722193091.

It is a happy number.

It is not a de Polignac number, because 190391227 - 2⁷ = 190391099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 190391192 and 190391201.

It is not an unprimeable number, because it can be changed into a prime (190391221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416383 + ... + 416839.

It is an arithmetic number, because the mean of its divisors is an integer number (13048420).

Almost surely, 2^190391227 is an apocalyptic number.

190391227 is a deficient number, since it is larger than the sum of its proper divisors (18383493).

190391227 is a wasteful number, since it uses less digits than its factorization.

190391227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 190391227 is about 13798.2327491603. The cubic root of 190391227 is about 575.2840204919.

The spelling of 190391227 in words is "one hundred ninety million, three hundred ninety-one thousand, two hundred twenty-seven".