16429399 has 8 divisors (see below), whose sum is σ = 19424160. Its totient is φ = 13596576.

The previous prime is 16429379. The next prime is 16429403. The reversal of 16429399 is 99392461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16429399 - 2¹¹ = 16427351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16429379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40264 + ... + 40669.

It is an arithmetic number, because the mean of its divisors is an integer number (2428020).

Almost surely, 2^16429399 is an apocalyptic number.

16429399 is a deficient number, since it is larger than the sum of its proper divisors (2994761).

16429399 is an equidigital number, since it uses as much as digits as its factorization.

16429399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80969.

The product of its digits is 104976, while the sum is 43.

The square root of 16429399 is about 4053.3195038141. The cubic root of 16429399 is about 254.2185431810.

The spelling of 16429399 in words is "sixteen million, four hundred twenty-nine thousand, three hundred ninety-nine".