13909630 has 24 divisors (see below), whose sum is σ = 29126088. Its totient is φ = 4768848.

The previous prime is 13909627. The next prime is 13909631. The reversal of 13909630 is 3690931.

It is a junction number, because it is equal to n+sod(n) for n = 13909592 and 13909601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13909631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13704 + ... + 14683.

It is an arithmetic number, because the mean of its divisors is an integer number (1213587).

Almost surely, 2^13909630 is an apocalyptic number.

13909630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13909630 is an abundant number, since it is smaller than the sum of its proper divisors (15216458).

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

13909630 is a wasteful number, since it uses less digits than its factorization.

13909630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28408 (or 28401 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 13909630 is about 3729.5616364393. The cubic root of 13909630 is about 240.4945243054.

The spelling of 13909630 in words is "thirteen million, nine hundred nine thousand, six hundred thirty".