840622897 has 8 divisors (see below), whose sum is σ = 846945792. Its totient is φ = 834320400.

The previous prime is 840622891. The next prime is 840622949. The reversal of 840622897 is 798226048.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 840622897 - 2²³ = 832234289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (840622891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83278 + ... + 92824.

It is an arithmetic number, because the mean of its divisors is an integer number (105868224).

Almost surely, 2^840622897 is an apocalyptic number.

It is an amenable number.

840622897 is a deficient number, since it is larger than the sum of its proper divisors (6322895).

840622897 is a wasteful number, since it uses less digits than its factorization.

840622897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10199.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 840622897 is about 28993.4974951281. The cubic root of 840622897 is about 943.7719636308.

The spelling of 840622897 in words is "eight hundred forty million, six hundred twenty-two thousand, eight hundred ninety-seven".