47442489 has 4 divisors (see below), whose sum is σ = 63256656. Its totient is φ = 31628324.

The previous prime is 47442407. The next prime is 47442497. The reversal of 47442489 is 98424474.

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 47442489 - 2⁷ = 47442361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47442489.

It is not an unprimeable number, because it can be changed into a prime (47442589) 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, 7907079 + ... + 7907084.

It is an arithmetic number, because the mean of its divisors is an integer number (15814164).

Almost surely, 2^47442489 is an apocalyptic number.

It is an amenable number.

47442489 is a deficient number, since it is larger than the sum of its proper divisors (15814167).

47442489 is a wasteful number, since it uses less digits than its factorization.

47442489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15814166.

The product of its digits is 258048, while the sum is 42.

The square root of 47442489 is about 6887.8508259108. The cubic root of 47442489 is about 362.0116013294.

The spelling of 47442489 in words is "forty-seven million, four hundred forty-two thousand, four hundred eighty-nine".