47842889 has 4 divisors (see below), whose sum is σ = 49386240. Its totient is φ = 46299540.

The previous prime is 47842843. The next prime is 47842901. The reversal of 47842889 is 98824874.

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 47842889 - 2⁸ = 47842633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47842819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771629 + ... + 771690.

It is an arithmetic number, because the mean of its divisors is an integer number (12346560).

Almost surely, 2^47842889 is an apocalyptic number.

It is an amenable number.

47842889 is a deficient number, since it is larger than the sum of its proper divisors (1543351).

47842889 is a wasteful number, since it uses less digits than its factorization.

47842889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543350.

The product of its digits is 1032192, while the sum is 50.

The square root of 47842889 is about 6916.8554271432. The cubic root of 47842889 is about 363.0271717829.

The spelling of 47842889 in words is "forty-seven million, eight hundred forty-two thousand, eight hundred eighty-nine".