47645079 has 4 divisors (see below), whose sum is σ = 63526776. Its totient is φ = 31763384.

The previous prime is 47645077. The next prime is 47645089. The reversal of 47645079 is 97054674.

47645079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 47645079 - 2¹ = 47645077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47645079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47645077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7940844 + ... + 7940849.

It is an arithmetic number, because the mean of its divisors is an integer number (15881694).

Almost surely, 2^47645079 is an apocalyptic number.

47645079 is a deficient number, since it is larger than the sum of its proper divisors (15881697).

47645079 is a wasteful number, since it uses less digits than its factorization.

47645079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15881696.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 47645079 is about 6902.5414884664. The cubic root of 47645079 is about 362.5261596659.

The spelling of 47645079 in words is "forty-seven million, six hundred forty-five thousand, seventy-nine".