840047422 has 8 divisors (see below), whose sum is σ = 1260211896. Its totient is φ = 419976792.

The previous prime is 840047357. The next prime is 840047449. The reversal of 840047422 is 224740048.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6648 + ... + 41524.

It is an arithmetic number, because the mean of its divisors is an integer number (157526487).

Almost surely, 2^840047422 is an apocalyptic number.

840047422 is a deficient number, since it is larger than the sum of its proper divisors (420164474).

840047422 is a wasteful number, since it uses less digits than its factorization.

840047422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46922.

The product of its (nonzero) digits is 14336, while the sum is 31.

The square root of 840047422 is about 28983.5715880566. The cubic root of 840047422 is about 943.5565514819.

The spelling of 840047422 in words is "eight hundred forty million, forty-seven thousand, four hundred twenty-two".