840863627 has 4 divisors (see below), whose sum is σ = 841307856. Its totient is φ = 840419400.

The previous prime is 840863587. The next prime is 840863633. The reversal of 840863627 is 726368048.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-840863627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (840863657) 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, 219263 + ... + 223064.

It is an arithmetic number, because the mean of its divisors is an integer number (210326964).

Almost surely, 2^840863627 is an apocalyptic number.

840863627 is a deficient number, since it is larger than the sum of its proper divisors (444229).

840863627 is a wasteful number, since it uses less digits than its factorization.

840863627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444228.

The product of its (nonzero) digits is 387072, while the sum is 44.

The square root of 840863627 is about 28997.6486460540. The cubic root of 840863627 is about 943.8620446654.

The spelling of 840863627 in words is "eight hundred forty million, eight hundred sixty-three thousand, six hundred twenty-seven".