47629447 has 4 divisors (see below), whose sum is σ = 50136280. Its totient is φ = 45122616.

The previous prime is 47629441. The next prime is 47629451. The reversal of 47629447 is 74492674.

47629447 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 a de Polignac number, because none of the positive numbers 2^k-47629447 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 (47629441) 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, 1253388 + ... + 1253425.

It is an arithmetic number, because the mean of its divisors is an integer number (12534070).

Almost surely, 2^47629447 is an apocalyptic number.

47629447 is a deficient number, since it is larger than the sum of its proper divisors (2506833).

47629447 is a wasteful number, since it uses less digits than its factorization.

47629447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506832.

The product of its digits is 338688, while the sum is 43.

The square root of 47629447 is about 6901.4090590256. The cubic root of 47629447 is about 362.4865079402.

The spelling of 47629447 in words is "forty-seven million, six hundred twenty-nine thousand, four hundred forty-seven".