16409349 has 24 divisors (see below), whose sum is σ = 26181792. Its totient is φ = 9820320.

The previous prime is 16409347. The next prime is 16409357. The reversal of 16409349 is 94390461.

16409349 is a `hidden beast` number, since 1 + 640 + 9 + 3 + 4 + 9 = 666.

16409349 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16409349 - 2¹ = 16409347 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16409347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7219 + ... + 9215.

It is an arithmetic number, because the mean of its divisors is an integer number (1090908).

Almost surely, 2^16409349 is an apocalyptic number.

It is an amenable number.

16409349 is a deficient number, since it is larger than the sum of its proper divisors (9772443).

16409349 is a wasteful number, since it uses less digits than its factorization.

16409349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097 (or 2094 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 16409349 is about 4050.8454673068. The cubic root of 16409349 is about 254.1150872431.

The spelling of 16409349 in words is "sixteen million, four hundred nine thousand, three hundred forty-nine".