23439029 has 2 divisors, whose sum is σ = 23439030. Its totient is φ = 23439028.

The previous prime is 23439023. The next prime is 23439037. The reversal of 23439029 is 92093432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23280625 + 158404 = 4825^2 + 398^2 .

It is a cyclic number.

It is not a de Polignac number, because 23439029 - 2¹² = 23434933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23438986 and 23439004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23439023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11719514 + 11719515.

It is an arithmetic number, because the mean of its divisors is an integer number (11719515).

Almost surely, 2^23439029 is an apocalyptic number.

It is an amenable number.

23439029 is a deficient number, since it is larger than the sum of its proper divisors (1).

23439029 is an equidigital number, since it uses as much as digits as its factorization.

23439029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 23439029 is about 4841.3870946248. The cubic root of 23439029 is about 286.1847836784.

The spelling of 23439029 in words is "twenty-three million, four hundred thirty-nine thousand, twenty-nine".