16349405 has 16 divisors (see below), whose sum is σ = 20848320. Its totient is φ = 12273408.

The previous prime is 16349401. The next prime is 16349419. The reversal of 16349405 is 50494361.

It is a cyclic number.

It is not a de Polignac number, because 16349405 - 2² = 16349401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16349401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9974 + ... + 11496.

It is an arithmetic number, because the mean of its divisors is an integer number (1303020).

Almost surely, 2^16349405 is an apocalyptic number.

It is an amenable number.

16349405 is a deficient number, since it is larger than the sum of its proper divisors (4498915).

16349405 is a wasteful number, since it uses less digits than its factorization.

16349405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 16349405 is about 4043.4397485309. The cubic root of 16349405 is about 253.8052788722.

The spelling of 16349405 in words is "sixteen million, three hundred forty-nine thousand, four hundred five".