16934399 has 4 divisors (see below), whose sum is σ = 17022336. Its totient is φ = 16846464.

The previous prime is 16934387. The next prime is 16934441. The reversal of 16934399 is 99343961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99343961 = 1151 ⋅86311.

It is a cyclic number.

It is not a de Polignac number, because 16934399 - 2⁴ = 16934383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16934369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43679 + ... + 44064.

It is an arithmetic number, because the mean of its divisors is an integer number (4255584).

Almost surely, 2^16934399 is an apocalyptic number.

16934399 is a deficient number, since it is larger than the sum of its proper divisors (87937).

16934399 is an equidigital number, since it uses as much as digits as its factorization.

16934399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87936.

The product of its digits is 157464, while the sum is 44.

The square root of 16934399 is about 4115.1426463733. The cubic root of 16934399 is about 256.7969902809.

The spelling of 16934399 in words is "sixteen million, nine hundred thirty-four thousand, three hundred ninety-nine".