47021719 has 2 divisors, whose sum is σ = 47021720. Its totient is φ = 47021718.

The previous prime is 47021707. The next prime is 47021749. The reversal of 47021719 is 91712074.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47021719 - 2⁵ = 47021687 is a prime.

It is a super-2 number, since 2×47021719² = 4422084115429922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47021749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23510859 + 23510860.

It is an arithmetic number, because the mean of its divisors is an integer number (23510860).

Almost surely, 2^47021719 is an apocalyptic number.

47021719 is a deficient number, since it is larger than the sum of its proper divisors (1).

47021719 is an equidigital number, since it uses as much as digits as its factorization.

47021719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 47021719 is about 6857.2384383219. The cubic root of 47021719 is about 360.9381881723.

The spelling of 47021719 in words is "forty-seven million, twenty-one thousand, seven hundred nineteen".