47416321 has 4 divisors (see below), whose sum is σ = 47435332. Its totient is φ = 47397312.

The previous prime is 47416319. The next prime is 47416331. The reversal of 47416321 is 12361474.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12361474 = 2 ⋅6180737.

It can be written as a sum of positive squares in 2 ways, for example, as 30647296 + 16769025 = 5536^2 + 4095^2 .

It is a cyclic number.

It is not a de Polignac number, because 47416321 - 2¹ = 47416319 is a prime.

It is an alternating number because its digits alternate between even and odd.

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 47416321.

It is not an unprimeable number, because it can be changed into a prime (47416331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5076 + ... + 10981.

It is an arithmetic number, because the mean of its divisors is an integer number (11858833).

Almost surely, 2^47416321 is an apocalyptic number.

It is an amenable number.

47416321 is a deficient number, since it is larger than the sum of its proper divisors (19011).

47416321 is a wasteful number, since it uses less digits than its factorization.

47416321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19010.

The product of its digits is 4032, while the sum is 28.

The square root of 47416321 is about 6885.9509873365. The cubic root of 47416321 is about 361.9450304698.

Adding to 47416321 its reverse (12361474), we get a palindrome (59777795).

The spelling of 47416321 in words is "forty-seven million, four hundred sixteen thousand, three hundred twenty-one".