13909950 has 36 divisors (see below), whose sum is σ = 37372608. Its totient is φ = 3709200.

The previous prime is 13909949. The next prime is 13909981. The reversal of 13909950 is 5990931.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15006 + ... + 15905.

It is an arithmetic number, because the mean of its divisors is an integer number (1038128).

Almost surely, 2^13909950 is an apocalyptic number.

13909950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13909950 is an abundant number, since it is smaller than the sum of its proper divisors (23462658).

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

13909950 is a wasteful number, since it uses less digits than its factorization.

13909950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30929 (or 30921 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 13909950 is about 3729.6045366768. The cubic root of 13909950 is about 240.4963685351.

The spelling of 13909950 in words is "thirteen million, nine hundred nine thousand, nine hundred fifty".