23872279 has 2 divisors, whose sum is σ = 23872280. Its totient is φ = 23872278.

The previous prime is 23872273. The next prime is 23872297. The reversal of 23872279 is 97227832.

Together with next prime (23872297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23872279 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23872273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11936139 + 11936140.

It is an arithmetic number, because the mean of its divisors is an integer number (11936140).

Almost surely, 2^23872279 is an apocalyptic number.

23872279 is a deficient number, since it is larger than the sum of its proper divisors (1).

23872279 is an equidigital number, since it uses as much as digits as its factorization.

23872279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 40.

The square root of 23872279 is about 4885.9266265469. The cubic root of 23872279 is about 287.9373215903.

The spelling of 23872279 in words is "twenty-three million, eight hundred seventy-two thousand, two hundred seventy-nine".