1391396 has 6 divisors (see below), whose sum is σ = 2434950. Its totient is φ = 695696.

The previous prime is 1391393. The next prime is 1391407. The reversal of 1391396 is 6931931.

It can be written as a sum of positive squares in only one way, i.e., 1345600 + 45796 = 1160^2 + 214^2 .

It is not an unprimeable number, because it can be changed into a prime (1391393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173921 + ... + 173928.

It is an arithmetic number, because the mean of its divisors is an integer number (405825).

2^1391396 is an apocalyptic number.

It is an amenable number.

1391396 is a deficient number, since it is larger than the sum of its proper divisors (1043554).

1391396 is a wasteful number, since it uses less digits than its factorization.

1391396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347853 (or 347851 counting only the distinct ones).

The product of its digits is 4374, while the sum is 32.

The square root of 1391396 is about 1179.5744995548. The cubic root of 1391396 is about 111.6392517042.

The spelling of 1391396 in words is "one million, three hundred ninety-one thousand, three hundred ninety-six".