1309964 has 6 divisors (see below), whose sum is σ = 2292444. Its totient is φ = 654980.

The previous prime is 1309963. The next prime is 1309999. The reversal of 1309964 is 4699031.

It is a self number, because there is not a number n which added to its sum of digits gives 1309964.

It is not an unprimeable number, because it can be changed into a prime (1309961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163742 + ... + 163749.

It is an arithmetic number, because the mean of its divisors is an integer number (382074).

2^1309964 is an apocalyptic number.

It is an amenable number.

1309964 is a deficient number, since it is larger than the sum of its proper divisors (982480).

1309964 is a wasteful number, since it uses less digits than its factorization.

1309964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327495 (or 327493 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1309964 is about 1144.5365874449. The cubic root of 1309964 is about 109.4174158211.

The spelling of 1309964 in words is "one million, three hundred nine thousand, nine hundred sixty-four".