47719387 has 2 divisors, whose sum is σ = 47719388. Its totient is φ = 47719386.

The previous prime is 47719351. The next prime is 47719403. The reversal of 47719387 is 78391774.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47719387 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47719327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23859693 + 23859694.

It is an arithmetic number, because the mean of its divisors is an integer number (23859694).

Almost surely, 2^47719387 is an apocalyptic number.

47719387 is a deficient number, since it is larger than the sum of its proper divisors (1).

47719387 is an equidigital number, since it uses as much as digits as its factorization.

47719387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 46.

The square root of 47719387 is about 6907.9220464623. The cubic root of 47719387 is about 362.7145289018.

The spelling of 47719387 in words is "forty-seven million, seven hundred nineteen thousand, three hundred eighty-seven".