47985418 has 24 divisors (see below), whose sum is σ = 78732108. Its totient is φ = 21804288.

The previous prime is 47985391. The next prime is 47985433. The reversal of 47985418 is 81458974.

It can be written as a sum of positive squares in 6 ways, for example, as 471969 + 47513449 = 687^2 + 6893^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205830 + ... + 206062.

Almost surely, 2^47985418 is an apocalyptic number.

47985418 is a deficient number, since it is larger than the sum of its proper divisors (30746690).

47985418 is a wasteful number, since it uses less digits than its factorization.

47985418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 337 counting only the distinct ones).

The product of its digits is 322560, while the sum is 46.

The square root of 47985418 is about 6927.1507851353. The cubic root of 47985418 is about 363.3873130995.

The spelling of 47985418 in words is "forty-seven million, nine hundred eighty-five thousand, four hundred eighteen".