13969998 has 72 divisors (see below), whose sum is σ = 36065952. Its totient is φ = 3894912.

The previous prime is 13969973. The next prime is 13970009. The reversal of 13969998 is 89996931.

13969998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 41286 + ... + 41622.

It is an arithmetic number, because the mean of its divisors is an integer number (500916).

Almost surely, 2^13969998 is an apocalyptic number.

13969998 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 13969998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18032976).

13969998 is an abundant number, since it is smaller than the sum of its proper divisors (22095954).

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

13969998 is a wasteful number, since it uses less digits than its factorization.

13969998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 396 counting only the distinct ones).

The product of its digits is 944784, while the sum is 54.

The square root of 13969998 is about 3737.6460506581. The cubic root of 13969998 is about 240.8419387923.

The spelling of 13969998 in words is "thirteen million, nine hundred sixty-nine thousand, nine hundred ninety-eight".