13899942 has 48 divisors (see below), whose sum is σ = 34774272. Its totient is φ = 3930480.

The previous prime is 13899929. The next prime is 13899947. The reversal of 13899942 is 24999831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13899947) 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, 12967 + ... + 13997.

It is an arithmetic number, because the mean of its divisors is an integer number (724464).

Almost surely, 2^13899942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13899942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17387136).

13899942 is an abundant number, since it is smaller than the sum of its proper divisors (20874330).

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

13899942 is a wasteful number, since it uses less digits than its factorization.

13899942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153 (or 1150 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 13899942 is about 3728.2625980475. The cubic root of 13899942 is about 240.4386768557.

It can be divided in two parts, 13899 and 942, that added together give a palindrome (14841).

The spelling of 13899942 in words is "thirteen million, eight hundred ninety-nine thousand, nine hundred forty-two".