13999810 has 16 divisors (see below), whose sum is σ = 27490752. Its totient is φ = 5090800.

The previous prime is 13999787. The next prime is 13999813. The reversal of 13999810 is 1899931.

It is a super-2 number, since 2×13999810² = 391989360072200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13999813) by changing a digit.

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, 63526 + ... + 63745.

It is an arithmetic number, because the mean of its divisors is an integer number (1718172).

Almost surely, 2^13999810 is an apocalyptic number.

13999810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13999810 is a deficient number, since it is larger than the sum of its proper divisors (13490942).

13999810 is a wasteful number, since it uses less digits than its factorization.

13999810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127289.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 13999810 is about 3741.6319968698. The cubic root of 13999810 is about 241.0131361101.

The spelling of 13999810 in words is "thirteen million, nine hundred ninety-nine thousand, eight hundred ten".