16849940 has 12 divisors (see below), whose sum is σ = 35384916. Its totient is φ = 6739968.

The previous prime is 16849909. The next prime is 16849949. The reversal of 16849940 is 4994861.

It can be written as a sum of positive squares in 2 ways, for example, as 10876804 + 5973136 = 3298^2 + 2444^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16849949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421229 + ... + 421268.

It is an arithmetic number, because the mean of its divisors is an integer number (2948743).

Almost surely, 2^16849940 is an apocalyptic number.

16849940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16849940 is an abundant number, since it is smaller than the sum of its proper divisors (18534976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16849940 is a wasteful number, since it uses less digits than its factorization.

16849940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842506 (or 842504 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 16849940 is about 4104.8678419652. The cubic root of 16849940 is about 256.3693602178.

The spelling of 16849940 in words is "sixteen million, eight hundred forty-nine thousand, nine hundred forty".