16226429 has 2 divisors, whose sum is σ = 16226430. Its totient is φ = 16226428.

The previous prime is 16226401. The next prime is 16226459. The reversal of 16226429 is 92462261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9060100 + 7166329 = 3010^2 + 2677^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16226429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16226395 and 16226404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16226459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8113214 + 8113215.

It is an arithmetic number, because the mean of its divisors is an integer number (8113215).

Almost surely, 2^16226429 is an apocalyptic number.

It is an amenable number.

16226429 is a deficient number, since it is larger than the sum of its proper divisors (1).

16226429 is an equidigital number, since it uses as much as digits as its factorization.

16226429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 32.

The square root of 16226429 is about 4028.2041904551. The cubic root of 16226429 is about 253.1673241019.

The spelling of 16226429 in words is "sixteen million, two hundred twenty-six thousand, four hundred twenty-nine".