8422905 has 48 divisors (see below), whose sum is σ = 15030720. Its totient is φ = 4021248.

The previous prime is 8422879. The next prime is 8422913. The reversal of 8422905 is 5092248.

It is not a de Polignac number, because 8422905 - 2⁵ = 8422873 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 125682 + ... + 125748.

It is an arithmetic number, because the mean of its divisors is an integer number (313140).

Almost surely, 2^8422905 is an apocalyptic number.

8422905 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8422905 is a deficient number, since it is larger than the sum of its proper divisors (6607815).

8422905 is a wasteful number, since it uses less digits than its factorization.

8422905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 8422905 is about 2902.2241470982. The cubic root of 8422905 is about 203.4638700152.

The spelling of 8422905 in words is "eight million, four hundred twenty-two thousand, nine hundred five".