47208945 has 16 divisors (see below), whose sum is σ = 86325120. Its totient is φ = 21581184.

The previous prime is 47208943. The next prime is 47208961. The reversal of 47208945 is 54980274.

47208945 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 47208945 - 2¹ = 47208943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47208943) 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, 224700 + ... + 224909.

It is an arithmetic number, because the mean of its divisors is an integer number (5395320).

Almost surely, 2^47208945 is an apocalyptic number.

It is an amenable number.

47208945 is a deficient number, since it is larger than the sum of its proper divisors (39116175).

47208945 is a wasteful number, since it uses less digits than its factorization.

47208945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449624.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 47208945 is about 6870.8765816306. The cubic root of 47208945 is about 361.4166019936.

The spelling of 47208945 in words is "forty-seven million, two hundred eight thousand, nine hundred forty-five".