13209990 has 16 divisors (see below), whose sum is σ = 31704048. Its totient is φ = 3522656.

The previous prime is 13209983. The next prime is 13209991. The reversal of 13209990 is 9990231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13209991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220137 + ... + 220196.

It is an arithmetic number, because the mean of its divisors is an integer number (1981503).

Almost surely, 2^13209990 is an apocalyptic number.

13209990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13209990 is an abundant number, since it is smaller than the sum of its proper divisors (18494058).

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

13209990 is a wasteful number, since it uses less digits than its factorization.

13209990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440343.

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 13209990 is about 3634.5549933933. The cubic root of 13209990 is about 236.3927554675.

The spelling of 13209990 in words is "thirteen million, two hundred nine thousand, nine hundred ninety".