13909698 has 32 divisors (see below), whose sum is σ = 33721920. Its totient is φ = 4214880.

The previous prime is 13909673. The next prime is 13909699. The reversal of 13909698 is 89690931.

13909698 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13909699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11115 + ... + 12302.

It is an arithmetic number, because the mean of its divisors is an integer number (1053810).

Almost surely, 2^13909698 is an apocalyptic number.

13909698 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13909698 is an abundant number, since it is smaller than the sum of its proper divisors (19812222).

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

13909698 is a wasteful number, since it uses less digits than its factorization.

13909698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23439 (or 23433 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 13909698 is about 3729.5707527811. The cubic root of 13909698 is about 240.4949162066.

The spelling of 13909698 in words is "thirteen million, nine hundred nine thousand, six hundred ninety-eight".