13406990 has 32 divisors (see below), whose sum is σ = 25310880. Its totient is φ = 5106304.

The previous prime is 13406977. The next prime is 13407047. The reversal of 13406990 is 9960431.

13406990 = 2113² + 2114² + 2115².

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 23792 + ... + 24348.

It is an arithmetic number, because the mean of its divisors is an integer number (790965).

Almost surely, 2^13406990 is an apocalyptic number.

13406990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13406990 is a deficient number, since it is larger than the sum of its proper divisors (11903890).

13406990 is a wasteful number, since it uses less digits than its factorization.

13406990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 13406990 is about 3661.5556803086. Note that the first 3 decimals coincide. The cubic root of 13406990 is about 237.5620668809.

The spelling of 13406990 in words is "thirteen million, four hundred six thousand, nine hundred ninety".