23479847 has 2 divisors, whose sum is σ = 23479848. Its totient is φ = 23479846.

The previous prime is 23479829. The next prime is 23479871. The reversal of 23479847 is 74897432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23479847 - 2⁶ = 23479783 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23479798 and 23479807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23470847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11739923 + 11739924.

It is an arithmetic number, because the mean of its divisors is an integer number (11739924).

Almost surely, 2^23479847 is an apocalyptic number.

23479847 is a deficient number, since it is larger than the sum of its proper divisors (1).

23479847 is an equidigital number, since it uses as much as digits as its factorization.

23479847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 44.

The square root of 23479847 is about 4845.6007883440. The cubic root of 23479847 is about 286.3508132542.

The spelling of 23479847 in words is "twenty-three million, four hundred seventy-nine thousand, eight hundred forty-seven".