16769409 has 16 divisors (see below), whose sum is σ = 22828800. Its totient is φ = 10947456.

The previous prime is 16769407. The next prime is 16769411. The reversal of 16769409 is 90496761.

It is an interprime number because it is at equal distance from previous prime (16769407) and next prime (16769411).

It is not a de Polignac number, because 16769409 - 2¹ = 16769407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16769407) 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, 40797 + ... + 41205.

It is an arithmetic number, because the mean of its divisors is an integer number (1426800).

Almost surely, 2^16769409 is an apocalyptic number.

It is an amenable number.

16769409 is a deficient number, since it is larger than the sum of its proper divisors (6059391).

16769409 is a wasteful number, since it uses less digits than its factorization.

16769409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 16769409 is about 4095.0468861785. The cubic root of 16769409 is about 255.9602853838.

The spelling of 16769409 in words is "sixteen million, seven hundred sixty-nine thousand, four hundred nine".