23178479 has 2 divisors, whose sum is σ = 23178480. Its totient is φ = 23178478.

The previous prime is 23178469. The next prime is 23178481. The reversal of 23178479 is 97487132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23178479 is a prime.

Together with 23178481, 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 (23178409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11589239 + 11589240.

It is an arithmetic number, because the mean of its divisors is an integer number (11589240).

Almost surely, 2^23178479 is an apocalyptic number.

23178479 is a deficient number, since it is larger than the sum of its proper divisors (1).

23178479 is an equidigital number, since it uses as much as digits as its factorization.

23178479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The square root of 23178479 is about 4814.4032859743. The cubic root of 23178479 is about 285.1204128507.

The spelling of 23178479 in words is "twenty-three million, one hundred seventy-eight thousand, four hundred seventy-nine".