13345749 has 8 divisors (see below), whose sum is σ = 19771520. Its totient is φ = 8897148.

The previous prime is 13345747. The next prime is 13345751. The reversal of 13345749 is 94754331.

It is an interprime number because it is at equal distance from previous prime (13345747) and next prime (13345751).

It is not a de Polignac number, because 13345749 - 2¹ = 13345747 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13345747) 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, 247117 + ... + 247170.

It is an arithmetic number, because the mean of its divisors is an integer number (2471440).

Almost surely, 2^13345749 is an apocalyptic number.

It is an amenable number.

13345749 is a deficient number, since it is larger than the sum of its proper divisors (6425771).

13345749 is an equidigital number, since it uses as much as digits as its factorization.

13345749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494296 (or 494290 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 13345749 is about 3653.1834062910. The cubic root of 13345749 is about 237.1997994684.

The spelling of 13345749 in words is "thirteen million, three hundred forty-five thousand, seven hundred forty-nine".