14399691 has 4 divisors (see below), whose sum is σ = 19199592. Its totient is φ = 9599792.

The previous prime is 14399677. The next prime is 14399699. The reversal of 14399691 is 19699341.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 14399691 - 2⁷ = 14399563 is a prime.

It is a super-2 number, since 2×14399691² = 414702201790962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (14399699) 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, 2399946 + ... + 2399951.

It is an arithmetic number, because the mean of its divisors is an integer number (4799898).

Almost surely, 2^14399691 is an apocalyptic number.

14399691 is a deficient number, since it is larger than the sum of its proper divisors (4799901).

14399691 is an equidigital number, since it uses as much as digits as its factorization.

14399691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4799900.

The product of its digits is 52488, while the sum is 42.

The square root of 14399691 is about 3794.6924776588. The cubic root of 14399691 is about 243.2863396249.

The spelling of 14399691 in words is "fourteen million, three hundred ninety-nine thousand, six hundred ninety-one".