8214479109 has 32 divisors (see below), whose sum is σ = 12497587200. Its totient is φ = 5329393920.

The previous prime is 8214479089. The next prime is 8214479123. The reversal of 8214479109 is 9019744128.

It is a happy number.

It is not a de Polignac number, because 8214479109 - 2¹² = 8214475013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8214479179) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 443692 + ... + 461834.

It is an arithmetic number, because the mean of its divisors is an integer number (390549600).

Almost surely, 2^8214479109 is an apocalyptic number.

It is an amenable number.

8214479109 is a deficient number, since it is larger than the sum of its proper divisors (4283108091).

8214479109 is a wasteful number, since it uses less digits than its factorization.

8214479109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18602 (or 18596 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 8214479109 is about 90633.7636259247. The cubic root of 8214479109 is about 2017.7158697166.

The spelling of 8214479109 in words is "eight billion, two hundred fourteen million, four hundred seventy-nine thousand, one hundred nine".