20399914 has 8 divisors (see below), whose sum is σ = 30771360. Its totient is φ = 10142796.

The previous prime is 20399909. The next prime is 20399921. The reversal of 20399914 is 41999302.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28134 + ... + 28849.

It is an arithmetic number, because the mean of its divisors is an integer number (3846420).

Almost surely, 2^20399914 is an apocalyptic number.

20399914 is a deficient number, since it is larger than the sum of its proper divisors (10371446).

20399914 is a wasteful number, since it uses less digits than its factorization.

20399914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57164.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 20399914 is about 4516.6263958844. The cubic root of 20399914 is about 273.2390576450.

The spelling of 20399914 in words is "twenty million, three hundred ninety-nine thousand, nine hundred fourteen".