47305939 has 2 divisors, whose sum is σ = 47305940. Its totient is φ = 47305938.

The previous prime is 47305919. The next prime is 47305949. The reversal of 47305939 is 93950374.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47305939 - 2¹¹ = 47303891 is a prime.

It is equal to p_2848981 and since 47305939 and 2848981 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (47305919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23652969 + 23652970.

It is an arithmetic number, because the mean of its divisors is an integer number (23652970).

Almost surely, 2^47305939 is an apocalyptic number.

47305939 is a deficient number, since it is larger than the sum of its proper divisors (1).

47305939 is an equidigital number, since it uses as much as digits as its factorization.

47305939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 47305939 is about 6877.9313023612. The cubic root of 47305939 is about 361.6639510321.

The spelling of 47305939 in words is "forty-seven million, three hundred five thousand, nine hundred thirty-nine".