47380439 has 2 divisors, whose sum is σ = 47380440. Its totient is φ = 47380438.

The previous prime is 47380429. The next prime is 47380441. The reversal of 47380439 is 93408374.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47380439 - 2⁴ = 47380423 is a prime.

It is a Sophie Germain prime.

Together with 47380441, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47380409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23690219 + 23690220.

It is an arithmetic number, because the mean of its divisors is an integer number (23690220).

Almost surely, 2^47380439 is an apocalyptic number.

47380439 is a deficient number, since it is larger than the sum of its proper divisors (1).

47380439 is an equidigital number, since it uses as much as digits as its factorization.

47380439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 47380439 is about 6883.3450443807. The cubic root of 47380439 is about 361.8537075616.

The spelling of 47380439 in words is "forty-seven million, three hundred eighty thousand, four hundred thirty-nine".