47238979 has 2 divisors, whose sum is σ = 47238980. Its totient is φ = 47238978.

The previous prime is 47238977. The next prime is 47239021. The reversal of 47238979 is 97983274.

47238979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47238979 - 2¹ = 47238977 is a prime.

It is a super-2 number, since 2×47238979² = 4463042273924882, which contains 22 as substring.

Together with 47238977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (47238977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23619489 + 23619490.

It is an arithmetic number, because the mean of its divisors is an integer number (23619490).

Almost surely, 2^47238979 is an apocalyptic number.

47238979 is a deficient number, since it is larger than the sum of its proper divisors (1).

47238979 is an equidigital number, since it uses as much as digits as its factorization.

47238979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 49.

The square root of 47238979 is about 6873.0618358924. The cubic root of 47238979 is about 361.4932293159.

The spelling of 47238979 in words is "forty-seven million, two hundred thirty-eight thousand, nine hundred seventy-nine".