47992418 has 8 divisors (see below), whose sum is σ = 72182748. Its totient is φ = 23931504.

The previous prime is 47992409. The next prime is 47992457. The reversal of 47992418 is 81429974.

47992418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 42549529 + 5442889 = 6523^2 + 2333^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31421 + ... + 32912.

Almost surely, 2^47992418 is an apocalyptic number.

47992418 is a deficient number, since it is larger than the sum of its proper divisors (24190330).

47992418 is a wasteful number, since it uses less digits than its factorization.

47992418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64708.

The product of its digits is 145152, while the sum is 44.

The square root of 47992418 is about 6927.6560249481. The cubic root of 47992418 is about 363.4049822695.

The spelling of 47992418 in words is "forty-seven million, nine hundred ninety-two thousand, four hundred eighteen".