47643959 has 4 divisors (see below), whose sum is σ = 51975240. Its totient is φ = 43312680.

The previous prime is 47643943. The next prime is 47643977. The reversal of 47643959 is 95934674.

It is a happy number.

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 47643959 - 2⁴ = 47643943 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 (47645959) 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, 2165624 + ... + 2165645.

It is an arithmetic number, because the mean of its divisors is an integer number (12993810).

Almost surely, 2^47643959 is an apocalyptic number.

47643959 is a deficient number, since it is larger than the sum of its proper divisors (4331281).

47643959 is a wasteful number, since it uses less digits than its factorization.

47643959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4331280.

The product of its digits is 816480, while the sum is 47.

The square root of 47643959 is about 6902.4603584519. The cubic root of 47643959 is about 362.5233189914.

The spelling of 47643959 in words is "forty-seven million, six hundred forty-three thousand, nine hundred fifty-nine".