47189390 has 32 divisors (see below), whose sum is σ = 86952960. Its totient is φ = 18434304.

The previous prime is 47189341. The next prime is 47189413. The reversal of 47189390 is 9398174.

It is a happy number.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92456 + ... + 92964.

It is an arithmetic number, because the mean of its divisors is an integer number (2717280).

Almost surely, 2^47189390 is an apocalyptic number.

47189390 is a deficient number, since it is larger than the sum of its proper divisors (39763570).

47189390 is a wasteful number, since it uses less digits than its factorization.

47189390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 47189390 is about 6869.4533989248. The cubic root of 47189390 is about 361.3666928241.

The spelling of 47189390 in words is "forty-seven million, one hundred eighty-nine thousand, three hundred ninety".