13949838 has 48 divisors (see below), whose sum is σ = 36366720. Its totient is φ = 3775248.

The previous prime is 13949821. The next prime is 13949839. The reversal of 13949838 is 83894931.

It is a junction number, because it is equal to n+sod(n) for n = 13949793 and 13949802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13949839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 520 + ... + 5307.

It is an arithmetic number, because the mean of its divisors is an integer number (757640).

Almost surely, 2^13949838 is an apocalyptic number.

13949838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13949838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18183360).

13949838 is an abundant number, since it is smaller than the sum of its proper divisors (22416882).

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

13949838 is a wasteful number, since it uses less digits than its factorization.

13949838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5861 (or 5858 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 13949838 is about 3734.9481924118. The cubic root of 13949838 is about 240.7260306167.

The spelling of 13949838 in words is "thirteen million, nine hundred forty-nine thousand, eight hundred thirty-eight".