14099781 has 8 divisors (see below), whose sum is σ = 18817920. Its totient is φ = 9390752.

The previous prime is 14099753. The next prime is 14099797. The reversal of 14099781 is 18799041.

It is a happy number.

14099781 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 14099781 - 2⁹ = 14099269 is a prime.

It is a super-2 number, since 2×14099781² = 397607648495922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14099581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3265 + ... + 6233.

It is an arithmetic number, because the mean of its divisors is an integer number (2352240).

Almost surely, 2^14099781 is an apocalyptic number.

It is an amenable number.

14099781 is a deficient number, since it is larger than the sum of its proper divisors (4718139).

14099781 is a wasteful number, since it uses less digits than its factorization.

14099781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4555.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 14099781 is about 3754.9675098461. The cubic root of 14099781 is about 241.5854581415.

The spelling of 14099781 in words is "fourteen million, ninety-nine thousand, seven hundred eighty-one".