8623429 has 2 divisors, whose sum is σ = 8623430. Its totient is φ = 8623428.

The previous prime is 8623423. The next prime is 8623519. The reversal of 8623429 is 9243268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5750404 + 2873025 = 2398^2 + 1695^2 .

It is a cyclic number.

It is not a de Polignac number, because 8623429 - 2¹³ = 8615237 is a prime.

8623429 is a lucky number.

It is equal to p₅₇₈₉₂₃ and since 8623429 and 578923 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 8623394 and 8623403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8623423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4311714 + 4311715.

It is an arithmetic number, because the mean of its divisors is an integer number (4311715).

Almost surely, 2^8623429 is an apocalyptic number.

It is an amenable number.

8623429 is a deficient number, since it is larger than the sum of its proper divisors (1).

8623429 is an equidigital number, since it uses as much as digits as its factorization.

8623429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 8623429 is about 2936.5675541353. The cubic root of 8623429 is about 205.0658444052.

The spelling of 8623429 in words is "eight million, six hundred twenty-three thousand, four hundred twenty-nine".