856649422 has 16 divisors (see below), whose sum is σ = 1292833872. Its totient is φ = 425711680.

The previous prime is 856649411. The next prime is 856649459. The reversal of 856649422 is 224946658.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349722 + ... + 352162.

It is an arithmetic number, because the mean of its divisors is an integer number (80802117).

Almost surely, 2^856649422 is an apocalyptic number.

856649422 is a deficient number, since it is larger than the sum of its proper divisors (436184450).

856649422 is a wasteful number, since it uses less digits than its factorization.

856649422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3443.

The product of its digits is 829440, while the sum is 46.

The square root of 856649422 is about 29268.5739659451. The cubic root of 856649422 is about 949.7319361859.

The spelling of 856649422 in words is "eight hundred fifty-six million, six hundred forty-nine thousand, four hundred twenty-two".