16949090 has 8 divisors (see below), whose sum is σ = 30508380. Its totient is φ = 6779632.

The previous prime is 16949087. The next prime is 16949099. The reversal of 16949090 is 9094961.

It can be written as a sum of positive squares in 2 ways, for example, as 14737921 + 2211169 = 3839^2 + 1487^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (16949099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847445 + ... + 847464.

Almost surely, 2^16949090 is an apocalyptic number.

16949090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16949090 is a deficient number, since it is larger than the sum of its proper divisors (13559290).

16949090 is a wasteful number, since it uses less digits than its factorization.

16949090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694916.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 16949090 is about 4116.9272522113. The cubic root of 16949090 is about 256.8712280137.

The spelling of 16949090 in words is "sixteen million, nine hundred forty-nine thousand, ninety".