1364389 has 4 divisors (see below), whose sum is σ = 1469356. Its totient is φ = 1259424.

The previous prime is 1364381. The next prime is 1364399. The reversal of 1364389 is 9834631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9834631 = 79 ⋅124489.

It can be written as a sum of positive squares in 2 ways, for example, as 245025 + 1119364 = 495^2 + 1058^2 .

It is a cyclic number.

It is not a de Polignac number, because 1364389 - 2³ = 1364381 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 (1364381) 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, 52464 + ... + 52489.

It is an arithmetic number, because the mean of its divisors is an integer number (367339).

2^1364389 is an apocalyptic number.

It is an amenable number.

1364389 is a deficient number, since it is larger than the sum of its proper divisors (104967).

1364389 is a wasteful number, since it uses less digits than its factorization.

1364389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104966.

The product of its digits is 15552, while the sum is 34.

The square root of 1364389 is about 1168.0706314260. The cubic root of 1364389 is about 110.9122212720.

The spelling of 1364389 in words is "one million, three hundred sixty-four thousand, three hundred eighty-nine".