13998629 has 4 divisors (see below), whose sum is σ = 14016384. Its totient is φ = 13980876.

The previous prime is 13998613. The next prime is 13998631. The reversal of 13998629 is 92689931.

13998629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13998629 - 2⁴ = 13998613 is a prime.

It is a super-2 number, since 2×13998629² = 391923227759282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13998659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7637 + ... + 9290.

It is an arithmetic number, because the mean of its divisors is an integer number (3504096).

Almost surely, 2^13998629 is an apocalyptic number.

It is an amenable number.

13998629 is a deficient number, since it is larger than the sum of its proper divisors (17755).

13998629 is an equidigital number, since it uses as much as digits as its factorization.

13998629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17754.

The product of its digits is 209952, while the sum is 47.

The square root of 13998629 is about 3741.4741747071. The cubic root of 13998629 is about 241.0063587677.

The spelling of 13998629 in words is "thirteen million, nine hundred ninety-eight thousand, six hundred twenty-nine".