47447079 has 4 divisors (see below), whose sum is σ = 63262776. Its totient is φ = 31631384.

The previous prime is 47447077. The next prime is 47447107. The reversal of 47447079 is 97074474.

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 47447079 - 2¹ = 47447077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47447079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47447077) 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, 7907844 + ... + 7907849.

It is an arithmetic number, because the mean of its divisors is an integer number (15815694).

Almost surely, 2^47447079 is an apocalyptic number.

47447079 is a deficient number, since it is larger than the sum of its proper divisors (15815697).

47447079 is a wasteful number, since it uses less digits than its factorization.

47447079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15815696.

The product of its (nonzero) digits is 197568, while the sum is 42.

The square root of 47447079 is about 6888.1840132215. The cubic root of 47447079 is about 362.0232756724.

The spelling of 47447079 in words is "forty-seven million, four hundred forty-seven thousand, seventy-nine".