13285749 has 8 divisors (see below), whose sum is σ = 17871552. Its totient is φ = 8778560.

The previous prime is 13285717. The next prime is 13285757. The reversal of 13285749 is 94758231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13285749 - 2⁵ = 13285717 is a prime.

It is a super-2 number, since 2×13285749² = 353022252982002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13285709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19257 + ... + 19934.

It is an arithmetic number, because the mean of its divisors is an integer number (2233944).

Almost surely, 2^13285749 is an apocalyptic number.

It is an amenable number.

13285749 is a deficient number, since it is larger than the sum of its proper divisors (4585803).

13285749 is a wasteful number, since it uses less digits than its factorization.

13285749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39307.

The product of its digits is 60480, while the sum is 39.

The square root of 13285749 is about 3644.9621397211. The cubic root of 13285749 is about 236.8437967313.

The spelling of 13285749 in words is "thirteen million, two hundred eighty-five thousand, seven hundred forty-nine".