16949709 has 16 divisors (see below), whose sum is σ = 28698240. Its totient is φ = 9685440.

The previous prime is 16949707. The next prime is 16949711. The reversal of 16949709 is 90794961.

It is an interprime number because it is at equal distance from previous prime (16949707) and next prime (16949711).

It is not a de Polignac number, because 16949709 - 2¹ = 16949707 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16949707) 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, 44652 + ... + 45029.

It is an arithmetic number, because the mean of its divisors is an integer number (1793640).

Almost surely, 2^16949709 is an apocalyptic number.

It is an amenable number.

16949709 is a deficient number, since it is larger than the sum of its proper divisors (11748531).

16949709 is an equidigital number, since it uses as much as digits as its factorization.

16949709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89697 (or 89691 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 16949709 is about 4117.0024289524. The cubic root of 16949709 is about 256.8743550519.

The spelling of 16949709 in words is "sixteen million, nine hundred forty-nine thousand, seven hundred nine".