16399234 has 8 divisors (see below), whose sum is σ = 24621948. Its totient is φ = 8191920.

The previous prime is 16399183. The next prime is 16399247. The reversal of 16399234 is 43299361.

It can be written as a sum of positive squares in 2 ways, for example, as 16378209 + 21025 = 4047^2 + 145^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 16399193 and 16399202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657 + ... + 5764.

Almost surely, 2^16399234 is an apocalyptic number.

16399234 is a deficient number, since it is larger than the sum of its proper divisors (8222714).

16399234 is a wasteful number, since it uses less digits than its factorization.

16399234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7700.

The product of its digits is 34992, while the sum is 37.

The square root of 16399234 is about 4049.5967700501. The cubic root of 16399234 is about 254.0628628998.

The spelling of 16399234 in words is "sixteen million, three hundred ninety-nine thousand, two hundred thirty-four".