13649984 has 14 divisors (see below), whose sum is σ = 27086814. Its totient is φ = 6824960.

The previous prime is 13649969. The next prime is 13649989. The reversal of 13649984 is 48994631.

It can be written as a sum of positive squares in only one way, i.e., 13542400 + 107584 = 3680^2 + 328^2 .

It is not an unprimeable number, because it can be changed into a prime (13649989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106577 + ... + 106704.

Almost surely, 2^13649984 is an apocalyptic number.

It is an amenable number.

13649984 is a deficient number, since it is larger than the sum of its proper divisors (13436830).

13649984 is an equidigital number, since it uses as much as digits as its factorization.

13649984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213293 (or 213283 counting only the distinct ones).

The product of its digits is 186624, while the sum is 44.

The square root of 13649984 is about 3694.5884750538. The cubic root of 13649984 is about 238.9887076473.

The spelling of 13649984 in words is "thirteen million, six hundred forty-nine thousand, nine hundred eighty-four".