47889329 has 4 divisors (see below), whose sum is σ = 50409840. Its totient is φ = 45368820.

The previous prime is 47889319. The next prime is 47889337. The reversal of 47889329 is 92398874.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 47889329 - 2⁸ = 47889073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47889319) 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, 1260227 + ... + 1260264.

It is an arithmetic number, because the mean of its divisors is an integer number (12602460).

Almost surely, 2^47889329 is an apocalyptic number.

It is an amenable number.

47889329 is a deficient number, since it is larger than the sum of its proper divisors (2520511).

47889329 is a wasteful number, since it uses less digits than its factorization.

47889329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520510.

The product of its digits is 870912, while the sum is 50.

The square root of 47889329 is about 6920.2116297119. The cubic root of 47889329 is about 363.1445945268.

The spelling of 47889329 in words is "forty-seven million, eight hundred eighty-nine thousand, three hundred twenty-nine".