47809146 has 32 divisors (see below), whose sum is σ = 119213568. Its totient is φ = 12417840.

The previous prime is 47809133. The next prime is 47809147. The reversal of 47809146 is 64190874.

It is a happy number.

47809146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (47809147) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 51280 + ... + 52203.

It is an arithmetic number, because the mean of its divisors is an integer number (3725424).

Almost surely, 2^47809146 is an apocalyptic number.

47809146 is an abundant number, since it is smaller than the sum of its proper divisors (71404422).

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

47809146 is a wasteful number, since it uses less digits than its factorization.

47809146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103506.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 47809146 is about 6914.4158104644. The cubic root of 47809146 is about 362.9418055137.

The spelling of 47809146 in words is "forty-seven million, eight hundred nine thousand, one hundred forty-six".