47813239 has 2 divisors, whose sum is σ = 47813240. Its totient is φ = 47813238.

The previous prime is 47813201. The next prime is 47813243. The reversal of 47813239 is 93231874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47813239 - 2⁹ = 47812727 is a prime.

It is a super-2 number, since 2×47813239² = 4572211647342242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47813198 and 47813207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47813539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23906619 + 23906620.

It is an arithmetic number, because the mean of its divisors is an integer number (23906620).

Almost surely, 2^47813239 is an apocalyptic number.

47813239 is a deficient number, since it is larger than the sum of its proper divisors (1).

47813239 is an equidigital number, since it uses as much as digits as its factorization.

47813239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 47813239 is about 6914.7117799660. The cubic root of 47813239 is about 362.9521625168.

The spelling of 47813239 in words is "forty-seven million, eight hundred thirteen thousand, two hundred thirty-nine".