47889864 has 144 divisors (see below), whose sum is σ = 149385600. Its totient is φ = 13823040.

The previous prime is 47889859. The next prime is 47889893. The reversal of 47889864 is 46898874.

It is a self number, because there is not a number n which added to its sum of digits gives 47889864.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 200257 + ... + 200495.

It is an arithmetic number, because the mean of its divisors is an integer number (1037400).

Almost surely, 2^47889864 is an apocalyptic number.

47889864 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47889864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74692800).

47889864 is an abundant number, since it is smaller than the sum of its proper divisors (101495736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47889864 is a wasteful number, since it uses less digits than its factorization.

47889864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 278 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 47889864 is about 6920.2502844912. The cubic root of 47889864 is about 363.1459468228.

The spelling of 47889864 in words is "forty-seven million, eight hundred eighty-nine thousand, eight hundred sixty-four".