13959972 has 96 divisors (see below), whose sum is σ = 39858560. Its totient is φ = 4199040.

The previous prime is 13959961. The next prime is 13959973. The reversal of 13959972 is 27995931.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13959973) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85563 + ... + 85725.

Almost surely, 2^13959972 is an apocalyptic number.

13959972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13959972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19929280).

13959972 is an abundant number, since it is smaller than the sum of its proper divisors (25898588).

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

13959972 is a wasteful number, since it uses less digits than its factorization.

13959972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 242 counting only the distinct ones).

The product of its digits is 153090, while the sum is 45.

The square root of 13959972 is about 3736.3045914379. The cubic root of 13959972 is about 240.7843091213.

The spelling of 13959972 in words is "thirteen million, nine hundred fifty-nine thousand, nine hundred seventy-two".