9923429 has 2 divisors, whose sum is σ = 9923430. Its totient is φ = 9923428.

The previous prime is 9923413. The next prime is 9923449. The reversal of 9923429 is 9243299.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8862529 + 1060900 = 2977^2 + 1030^2 .

It is a cyclic number.

It is not a de Polignac number, because 9923429 - 2⁴ = 9923413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9923392 and 9923401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9923449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4961714 + 4961715.

It is an arithmetic number, because the mean of its divisors is an integer number (4961715).

Almost surely, 2^9923429 is an apocalyptic number.

It is an amenable number.

9923429 is a deficient number, since it is larger than the sum of its proper divisors (1).

9923429 is an equidigital number, since it uses as much as digits as its factorization.

9923429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 38.

The square root of 9923429 is about 3150.1474568661. The cubic root of 9923429 is about 214.8921687504.

The spelling of 9923429 in words is "nine million, nine hundred twenty-three thousand, four hundred twenty-nine".