840774227 has 4 divisors (see below), whose sum is σ = 860327160. Its totient is φ = 821221296.

The previous prime is 840774217. The next prime is 840774229. The reversal of 840774227 is 722477048.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 840774227 - 2¹² = 840770131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (840774229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9776402 + ... + 9776487.

It is an arithmetic number, because the mean of its divisors is an integer number (215081790).

Almost surely, 2^840774227 is an apocalyptic number.

840774227 is a deficient number, since it is larger than the sum of its proper divisors (19552933).

840774227 is a wasteful number, since it uses less digits than its factorization.

840774227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19552932.

The product of its (nonzero) digits is 175616, while the sum is 41.

The square root of 840774227 is about 28996.1071007816. The cubic root of 840774227 is about 943.8285932413.

The spelling of 840774227 in words is "eight hundred forty million, seven hundred seventy-four thousand, two hundred twenty-seven".