47440039 has 2 divisors, whose sum is σ = 47440040. Its totient is φ = 47440038.

The previous prime is 47440037. The next prime is 47440067. The reversal of 47440039 is 93004474.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47440039 - 2¹ = 47440037 is a prime.

Together with 47440037, 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 (47440037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23720019 + 23720020.

It is an arithmetic number, because the mean of its divisors is an integer number (23720020).

Almost surely, 2^47440039 is an apocalyptic number.

47440039 is a deficient number, since it is larger than the sum of its proper divisors (1).

47440039 is an equidigital number, since it uses as much as digits as its factorization.

47440039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 47440039 is about 6887.6729742345. The cubic root of 47440039 is about 362.0053696181.

The spelling of 47440039 in words is "forty-seven million, four hundred forty thousand, thirty-nine".