13709990 has 64 divisors (see below), whose sum is σ = 30699648. Its totient is φ = 4300800.

The previous prime is 13709989. The next prime is 13709999. The reversal of 13709990 is 9990731.

It is a happy number.

It is a super-3 number, since 3×13709990³ (a number of 22 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13709999) 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 31 ways as a sum of consecutive naturals, for example, 48650 + ... + 48930.

It is an arithmetic number, because the mean of its divisors is an integer number (479682).

Almost surely, 2^13709990 is an apocalyptic number.

13709990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13709990 is an abundant number, since it is smaller than the sum of its proper divisors (16989658).

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

13709990 is a wasteful number, since it uses less digits than its factorization.

13709990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353.

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 13709990 is about 3702.7003659492. The cubic root of 13709990 is about 239.3383977603.

The spelling of 13709990 in words is "thirteen million, seven hundred nine thousand, nine hundred ninety".