1316749 has 4 divisors (see below), whose sum is σ = 1504864. Its totient is φ = 1128636.

The previous prime is 1316743. The next prime is 1316761. The reversal of 1316749 is 9476131.

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: 9476131 = 7 ⋅1353733.

It is a cyclic number.

It is not a de Polignac number, because 1316749 - 2³ = 1316741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1316749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316741) 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, 94047 + ... + 94060.

It is an arithmetic number, because the mean of its divisors is an integer number (376216).

2^1316749 is an apocalyptic number.

It is an amenable number.

1316749 is a deficient number, since it is larger than the sum of its proper divisors (188115).

1316749 is an equidigital number, since it uses as much as digits as its factorization.

1316749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188114.

The product of its digits is 4536, while the sum is 31.

The square root of 1316749 is about 1147.4968409543. The cubic root of 1316749 is about 109.6060009235.

The spelling of 1316749 in words is "one million, three hundred sixteen thousand, seven hundred forty-nine".