13489866 has 24 divisors (see below), whose sum is σ = 31476900. Its totient is φ = 4150656.

The previous prime is 13489849. The next prime is 13489873. The reversal of 13489866 is 66898431.

It can be written as a sum of positive squares in 2 ways, for example, as 13111641 + 378225 = 3621^2 + 615^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28591 + ... + 29058.

Almost surely, 2^13489866 is an apocalyptic number.

13489866 is an abundant number, since it is smaller than the sum of its proper divisors (17987034).

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

13489866 is a wasteful number, since it uses less digits than its factorization.

13489866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57670 (or 57667 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 13489866 is about 3672.8552925483. The cubic root of 13489866 is about 238.0505624278.

It can be divided in two parts, 134 and 89866, that added together give a square (90000 = 300²).

The spelling of 13489866 in words is "thirteen million, four hundred eighty-nine thousand, eight hundred sixty-six".