47721199 has 2 divisors, whose sum is σ = 47721200. Its totient is φ = 47721198.

The previous prime is 47721197. The next prime is 47721241. The reversal of 47721199 is 99112774.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47721199 - 2¹ = 47721197 is a prime.

Together with 47721197, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47721197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23860599 + 23860600.

It is an arithmetic number, because the mean of its divisors is an integer number (23860600).

Almost surely, 2^47721199 is an apocalyptic number.

47721199 is a deficient number, since it is larger than the sum of its proper divisors (1).

47721199 is an equidigital number, since it uses as much as digits as its factorization.

47721199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 40.

The square root of 47721199 is about 6908.0531989845. The cubic root of 47721199 is about 362.7191198409.

The spelling of 47721199 in words is "forty-seven million, seven hundred twenty-one thousand, one hundred ninety-nine".