47122689 has 4 divisors (see below), whose sum is σ = 62830256. Its totient is φ = 31415124.

The previous prime is 47122681. The next prime is 47122729. The reversal of 47122689 is 98622174.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 47122689 - 2³ = 47122681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47122681) 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, 7853779 + ... + 7853784.

It is an arithmetic number, because the mean of its divisors is an integer number (15707564).

Almost surely, 2^47122689 is an apocalyptic number.

It is an amenable number.

47122689 is a deficient number, since it is larger than the sum of its proper divisors (15707567).

47122689 is a wasteful number, since it uses less digits than its factorization.

47122689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15707566.

The product of its digits is 48384, while the sum is 39.

The square root of 47122689 is about 6864.5967834972. The cubic root of 47122689 is about 361.1963516713.

The spelling of 47122689 in words is "forty-seven million, one hundred twenty-two thousand, six hundred eighty-nine".