1312949 has 4 divisors (see below), whose sum is σ = 1432320. Its totient is φ = 1193580.

The previous prime is 1312937. The next prime is 1312951. The reversal of 1312949 is 9492131.

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: 9492131 = 11 ⋅862921.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312949 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 (1315949) 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, 59669 + ... + 59690.

It is an arithmetic number, because the mean of its divisors is an integer number (358080).

2^1312949 is an apocalyptic number.

It is an amenable number.

1312949 is a deficient number, since it is larger than the sum of its proper divisors (119371).

1312949 is a wasteful number, since it uses less digits than its factorization.

1312949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119370.

The product of its digits is 1944, while the sum is 29.

The square root of 1312949 is about 1145.8398666480. The cubic root of 1312949 is about 109.5004621791.

The spelling of 1312949 in words is "one million, three hundred twelve thousand, nine hundred forty-nine".