1309396 has 12 divisors (see below), whose sum is σ = 2499840. Its totient is φ = 595160.

The previous prime is 1309369. The next prime is 1309397. The reversal of 1309396 is 6939031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1309397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14836 + ... + 14923.

It is an arithmetic number, because the mean of its divisors is an integer number (208320).

2^1309396 is an apocalyptic number.

It is an amenable number.

1309396 is a deficient number, since it is larger than the sum of its proper divisors (1190444).

1309396 is a wasteful number, since it uses less digits than its factorization.

1309396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29774 (or 29772 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 1309396 is about 1144.2884251796. The cubic root of 1309396 is about 109.4015990818.

The spelling of 1309396 in words is "one million, three hundred nine thousand, three hundred ninety-six".