16469639 has 2 divisors, whose sum is σ = 16469640. Its totient is φ = 16469638.

The previous prime is 16469569. The next prime is 16469641. The reversal of 16469639 is 93696461.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16469639 is a prime.

Together with 16469641, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16469639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16469669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8234819 + 8234820.

It is an arithmetic number, because the mean of its divisors is an integer number (8234820).

Almost surely, 2^16469639 is an apocalyptic number.

16469639 is a deficient number, since it is larger than the sum of its proper divisors (1).

16469639 is an equidigital number, since it uses as much as digits as its factorization.

16469639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 44.

The square root of 16469639 is about 4058.2803008171. The cubic root of 16469639 is about 254.4259237374.

The spelling of 16469639 in words is "sixteen million, four hundred sixty-nine thousand, six hundred thirty-nine".