13961998 has 16 divisors (see below), whose sum is σ = 23343120. Its totient is φ = 6224256.

The previous prime is 13961993. The next prime is 13962023. The reversal of 13961998 is 89916931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13961993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10161 + ... + 11452.

It is an arithmetic number, because the mean of its divisors is an integer number (1458945).

Almost surely, 2^13961998 is an apocalyptic number.

13961998 is a deficient number, since it is larger than the sum of its proper divisors (9381122).

13961998 is a wasteful number, since it uses less digits than its factorization.

13961998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21651.

The product of its digits is 104976, while the sum is 46.

The square root of 13961998 is about 3736.5757051076. The cubic root of 13961998 is about 240.7959568384.

The spelling of 13961998 in words is "thirteen million, nine hundred sixty-one thousand, nine hundred ninety-eight".