47345539 has 2 divisors, whose sum is σ = 47345540. Its totient is φ = 47345538.

The previous prime is 47345509. The next prime is 47345593. The reversal of 47345539 is 93554374.

It is a happy number.

Together with next prime (47345593) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47345539 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47345509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23672769 + 23672770.

It is an arithmetic number, because the mean of its divisors is an integer number (23672770).

Almost surely, 2^47345539 is an apocalyptic number.

47345539 is a deficient number, since it is larger than the sum of its proper divisors (1).

47345539 is an equidigital number, since it uses as much as digits as its factorization.

47345539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 40.

The square root of 47345539 is about 6880.8094727292. The cubic root of 47345539 is about 361.7648396895.

The spelling of 47345539 in words is "forty-seven million, three hundred forty-five thousand, five hundred thirty-nine".