47819722 has 4 divisors (see below), whose sum is σ = 71729586. Its totient is φ = 23909860.

The previous prime is 47819711. The next prime is 47819729. The reversal of 47819722 is 22791874.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 45414121 + 2405601 = 6739^2 + 1551^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (47819729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11954929 + ... + 11954932.

Almost surely, 2^47819722 is an apocalyptic number.

47819722 is a deficient number, since it is larger than the sum of its proper divisors (23909864).

47819722 is a wasteful number, since it uses less digits than its factorization.

47819722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23909863.

The product of its digits is 56448, while the sum is 40.

The square root of 47819722 is about 6915.1805471730. The cubic root of 47819722 is about 362.9685660107.

The spelling of 47819722 in words is "forty-seven million, eight hundred nineteen thousand, seven hundred twenty-two".