47031649 has 16 divisors (see below), whose sum is σ = 55941120. Its totient is φ = 38687040.

The previous prime is 47031643. The next prime is 47031659. The reversal of 47031649 is 94613074.

It is a happy number.

47031649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47031649 - 2³ = 47031641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47031641) 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, 38167 + ... + 39379.

It is an arithmetic number, because the mean of its divisors is an integer number (3496320).

Almost surely, 2^47031649 is an apocalyptic number.

It is an amenable number.

47031649 is a deficient number, since it is larger than the sum of its proper divisors (8909471).

47031649 is a wasteful number, since it uses less digits than its factorization.

47031649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 47031649 is about 6857.9624525073. The cubic root of 47031649 is about 360.9635939069.

The spelling of 47031649 in words is "forty-seven million, thirty-one thousand, six hundred forty-nine".