16459990 has 8 divisors (see below), whose sum is σ = 29628000. Its totient is φ = 6583992.

The previous prime is 16459987. The next prime is 16459991. The reversal of 16459990 is 9995461.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16459991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822990 + ... + 823009.

It is an arithmetic number, because the mean of its divisors is an integer number (3703500).

Almost surely, 2^16459990 is an apocalyptic number.

16459990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16459990 is a deficient number, since it is larger than the sum of its proper divisors (13168010).

16459990 is a wasteful number, since it uses less digits than its factorization.

16459990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646006.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 16459990 is about 4057.0913226103. The cubic root of 16459990 is about 254.3762275395.

The spelling of 16459990 in words is "sixteen million, four hundred fifty-nine thousand, nine hundred ninety".