20399014 has 16 divisors (see below), whose sum is σ = 32950800. Its totient is φ = 9435904.

The previous prime is 20399009. The next prime is 20399033. The reversal of 20399014 is 41099302.

It is a happy number.

It is a super-2 number, since 2×20399014² = 832239544344392, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3079 + ... + 7090.

It is an arithmetic number, because the mean of its divisors is an integer number (2059425).

Almost surely, 2^20399014 is an apocalyptic number.

20399014 is a deficient number, since it is larger than the sum of its proper divisors (12551786).

20399014 is a wasteful number, since it uses less digits than its factorization.

20399014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10247.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 20399014 is about 4516.5267629009. The cubic root of 20399014 is about 273.2350393475.

The spelling of 20399014 in words is "twenty million, three hundred ninety-nine thousand, fourteen".