47981906 has 8 divisors (see below), whose sum is σ = 82254720. Its totient is φ = 20563668.

The previous prime is 47981881. The next prime is 47981917. The reversal of 47981906 is 60918974.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1713626 + ... + 1713653.

It is an arithmetic number, because the mean of its divisors is an integer number (10281840).

Almost surely, 2^47981906 is an apocalyptic number.

47981906 is a deficient number, since it is larger than the sum of its proper divisors (34272814).

47981906 is a wasteful number, since it uses less digits than its factorization.

47981906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3427288.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 47981906 is about 6926.8972852209. The cubic root of 47981906 is about 363.3784475773.

The spelling of 47981906 in words is "forty-seven million, nine hundred eighty-one thousand, nine hundred six".