13349757 has 4 divisors (see below), whose sum is σ = 17799680. Its totient is φ = 8899836.

The previous prime is 13349741. The next prime is 13349767. The reversal of 13349757 is 75794331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75794331 = 3 ⋅25264777.

It is not a de Polignac number, because 13349757 - 2⁴ = 13349741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13349767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2224957 + ... + 2224962.

It is an arithmetic number, because the mean of its divisors is an integer number (4449920).

Almost surely, 2^13349757 is an apocalyptic number.

It is an amenable number.

13349757 is a deficient number, since it is larger than the sum of its proper divisors (4449923).

13349757 is an equidigital number, since it uses as much as digits as its factorization.

13349757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4449922.

The product of its digits is 79380, while the sum is 39.

The square root of 13349757 is about 3653.7319277692. The cubic root of 13349757 is about 237.2235424006.

The spelling of 13349757 in words is "thirteen million, three hundred forty-nine thousand, seven hundred fifty-seven".