47444587 has 2 divisors, whose sum is σ = 47444588. Its totient is φ = 47444586.

The previous prime is 47444567. The next prime is 47444599. The reversal of 47444587 is 78544474.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47444587 - 2⁷ = 47444459 is a prime.

It is not a weakly prime, because it can be changed into another prime (47444557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23722293 + 23722294.

It is an arithmetic number, because the mean of its divisors is an integer number (23722294).

Almost surely, 2^47444587 is an apocalyptic number.

47444587 is a deficient number, since it is larger than the sum of its proper divisors (1).

47444587 is an equidigital number, since it uses as much as digits as its factorization.

47444587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 501760, while the sum is 43.

The square root of 47444587 is about 6888.0031213698. The cubic root of 47444587 is about 362.0169375386.

Subtracting from 47444587 its sum of digits (43), we obtain a square (47444544 = 6888²).

The spelling of 47444587 in words is "forty-seven million, four hundred forty-four thousand, five hundred eighty-seven".