47449518 has 16 divisors (see below), whose sum is σ = 95309136. Its totient is φ = 15748160.

The previous prime is 47449477. The next prime is 47449531. The reversal of 47449518 is 81594474.

It is a self number, because there is not a number n which added to its sum of digits gives 47449518.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15573 + ... + 18368.

It is an arithmetic number, because the mean of its divisors is an integer number (5956821).

Almost surely, 2^47449518 is an apocalyptic number.

47449518 is an abundant number, since it is smaller than the sum of its proper divisors (47859618).

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

47449518 is a wasteful number, since it uses less digits than its factorization.

47449518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34179.

The product of its digits is 161280, while the sum is 42.

The square root of 47449518 is about 6888.3610532550. The cubic root of 47449518 is about 362.0294787915.

The spelling of 47449518 in words is "forty-seven million, four hundred forty-nine thousand, five hundred eighteen".