13990004 has 24 divisors (see below), whose sum is σ = 29453760. Its totient is φ = 5679936.

The previous prime is 13990001. The next prime is 13990013. The reversal of 13990004 is 40009931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13990001) 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, 12617 + ... + 13680.

It is an arithmetic number, because the mean of its divisors is an integer number (1227240).

Almost surely, 2^13990004 is an apocalyptic number.

13990004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13990004 is an abundant number, since it is smaller than the sum of its proper divisors (15463756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13990004 is a wasteful number, since it uses less digits than its factorization.

13990004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26327 (or 26325 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 13990004 is about 3740.3213765665. The cubic root of 13990004 is about 240.9568513742.

Adding to 13990004 its reverse (40009931), we get a palindrome (53999935).

The spelling of 13990004 in words is "thirteen million, nine hundred ninety thousand, four".