16349399 has 6 divisors (see below), whose sum is σ = 17970960. Its totient is φ = 14862980.

The previous prime is 16349381. The next prime is 16349401. The reversal of 16349399 is 99394361.

It is not a de Polignac number, because 16349399 - 2⁸ = 16349143 is a prime.

It is a super-2 number, since 2×16349399² = 534605695322402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16349339) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67439 + ... + 67680.

It is an arithmetic number, because the mean of its divisors is an integer number (2995160).

Almost surely, 2^16349399 is an apocalyptic number.

16349399 is a deficient number, since it is larger than the sum of its proper divisors (1621561).

16349399 is a wasteful number, since it uses less digits than its factorization.

16349399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135141 (or 135130 counting only the distinct ones).

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

The square root of 16349399 is about 4043.4390065883. The cubic root of 16349399 is about 253.8052478245.

The spelling of 16349399 in words is "sixteen million, three hundred forty-nine thousand, three hundred ninety-nine".