47004921 has 16 divisors (see below), whose sum is σ = 70521600. Its totient is φ = 30938544.

The previous prime is 47004913. The next prime is 47004929. The reversal of 47004921 is 12940074.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (47004913) and next prime (47004929).

It is not a de Polignac number, because 47004921 - 2³ = 47004913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (47004929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8886 + ... + 13151.

It is an arithmetic number, because the mean of its divisors is an integer number (4407600).

Almost surely, 2^47004921 is an apocalyptic number.

It is an amenable number.

47004921 is a deficient number, since it is larger than the sum of its proper divisors (23516679).

47004921 is a wasteful number, since it uses less digits than its factorization.

47004921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22125 (or 22119 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 47004921 is about 6856.0134918187. The cubic root of 47004921 is about 360.8952026333.

Adding to 47004921 its reverse (12940074), we get a palindrome (59944995).

The spelling of 47004921 in words is "forty-seven million, four thousand, nine hundred twenty-one".