13988465 has 16 divisors (see below), whose sum is σ = 17774400. Its totient is φ = 10539072.

The previous prime is 13988453. The next prime is 13988477. The reversal of 13988465 is 56488931.

It is an interprime number because it is at equal distance from previous prime (13988453) and next prime (13988477).

It is not a de Polignac number, because 13988465 - 2¹⁴ = 13972081 is a prime.

It is a super-3 number, since 3×13988465³ (a number of 22 digits) contains 333 as substring.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 21434 + ... + 22076.

It is an arithmetic number, because the mean of its divisors is an integer number (1110900).

Almost surely, 2^13988465 is an apocalyptic number.

It is an amenable number.

13988465 is a deficient number, since it is larger than the sum of its proper divisors (3785935).

13988465 is a wasteful number, since it uses less digits than its factorization.

13988465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896.

The product of its digits is 207360, while the sum is 44.

The square root of 13988465 is about 3740.1156399235. The cubic root of 13988465 is about 240.9480153941.

The spelling of 13988465 in words is "thirteen million, nine hundred eighty-eight thousand, four hundred sixty-five".