23479371889 has 2 divisors, whose sum is σ = 23479371890. Its totient is φ = 23479371888.

The previous prime is 23479371871. The next prime is 23479371899. The reversal of 23479371889 is 98817397432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20394124864 + 3085247025 = 142808^2 + 55545^2 .

It is a cyclic number.

It is not a de Polignac number, because 23479371889 - 2¹⁷ = 23479240817 is a prime.

It is not a weakly prime, because it can be changed into another prime (23479371859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11739685944 + 11739685945.

It is an arithmetic number, because the mean of its divisors is an integer number (11739685945).

Almost surely, 2^23479371889 is an apocalyptic number.

It is an amenable number.

23479371889 is a deficient number, since it is larger than the sum of its proper divisors (1).

23479371889 is an equidigital number, since it uses as much as digits as its factorization.

23479371889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18289152, while the sum is 61.

The spelling of 23479371889 in words is "twenty-three billion, four hundred seventy-nine million, three hundred seventy-one thousand, eight hundred eighty-nine".