47222879 has 4 divisors (see below), whose sum is σ = 51515880. Its totient is φ = 42929880.

The previous prime is 47222869. The next prime is 47222911. The reversal of 47222879 is 97822274.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47222879 - 2²⁴ = 30445663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47222869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2146484 + ... + 2146505.

It is an arithmetic number, because the mean of its divisors is an integer number (12878970).

Almost surely, 2^47222879 is an apocalyptic number.

47222879 is a deficient number, since it is larger than the sum of its proper divisors (4293001).

47222879 is a wasteful number, since it uses less digits than its factorization.

47222879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4293000.

The product of its digits is 112896, while the sum is 41.

The square root of 47222879 is about 6871.8904967993. The cubic root of 47222879 is about 361.4521565800.

The spelling of 47222879 in words is "forty-seven million, two hundred twenty-two thousand, eight hundred seventy-nine".