48871989 has 24 divisors (see below), whose sum is σ = 74426040. Its totient is φ = 30855552.

The previous prime is 48871973. The next prime is 48871997. The reversal of 48871989 is 98917884.

48871989 is a `hidden beast` number, since 488 + 71 + 98 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 19873764 + 28998225 = 4458^2 + 5385^2 .

It is not a de Polignac number, because 48871989 - 2⁴ = 48871973 is a prime.

It is a super-2 number, since 2×48871989² = 4776942617632242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48871909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12067 + ... + 15599.

It is an arithmetic number, because the mean of its divisors is an integer number (3101085).

Almost surely, 2^48871989 is an apocalyptic number.

It is an amenable number.

48871989 is a deficient number, since it is larger than the sum of its proper divisors (25554051).

48871989 is a wasteful number, since it uses less digits than its factorization.

48871989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3621 (or 3618 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 54.

The square root of 48871989 is about 6990.8503774577. The cubic root of 48871989 is about 365.6116322967.

The spelling of 48871989 in words is "forty-eight million, eight hundred seventy-one thousand, nine hundred eighty-nine".