13991435 has 8 divisors (see below), whose sum is σ = 16810416. Its totient is φ = 11179360.

The previous prime is 13991401. The next prime is 13991441. The reversal of 13991435 is 53419931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13991435 - 2⁶ = 13991371 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13991395 and 13991404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5465 + ... + 7605.

It is an arithmetic number, because the mean of its divisors is an integer number (2101302).

Almost surely, 2^13991435 is an apocalyptic number.

13991435 is a deficient number, since it is larger than the sum of its proper divisors (2818981).

13991435 is a wasteful number, since it uses less digits than its factorization.

13991435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453.

The product of its digits is 14580, while the sum is 35.

The square root of 13991435 is about 3740.5126653976. The cubic root of 13991435 is about 240.9650667042.

The spelling of 13991435 in words is "thirteen million, nine hundred ninety-one thousand, four hundred thirty-five".