47404217 has 12 divisors (see below), whose sum is σ = 55263780. Its totient is φ = 40543776.

The previous prime is 47404213. The next prime is 47404237. The reversal of 47404217 is 71240474.

It can be written as a sum of positive squares in 2 ways, for example, as 28079401 + 19324816 = 5299^2 + 4396^2 .

It is not a de Polignac number, because 47404217 - 2² = 47404213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47404217.

It is not an unprimeable number, because it can be changed into a prime (47404213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32459 + ... + 33887.

It is an arithmetic number, because the mean of its divisors is an integer number (4605315).

Almost surely, 2^47404217 is an apocalyptic number.

It is an amenable number.

47404217 is a deficient number, since it is larger than the sum of its proper divisors (7859563).

47404217 is a wasteful number, since it uses less digits than its factorization.

47404217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120 (or 2113 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 47404217 is about 6885.0720402912. The cubic root of 47404217 is about 361.9142298552.

The spelling of 47404217 in words is "forty-seven million, four hundred four thousand, two hundred seventeen".