1379389 has 4 divisors (see below), whose sum is σ = 1504800. Its totient is φ = 1253980.

The previous prime is 1379387. The next prime is 1379423. The reversal of 1379389 is 9839731.

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: 9839731 = 11 ⋅894521.

It is a cyclic number.

It is not a de Polignac number, because 1379389 - 2¹ = 1379387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379383) 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, 62689 + ... + 62710.

It is an arithmetic number, because the mean of its divisors is an integer number (376200).

2^1379389 is an apocalyptic number.

It is an amenable number.

1379389 is a deficient number, since it is larger than the sum of its proper divisors (125411).

1379389 is a wasteful number, since it uses less digits than its factorization.

1379389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125410.

The product of its digits is 40824, while the sum is 40.

The square root of 1379389 is about 1174.4739247851. The cubic root of 1379389 is about 111.3171946041.

The spelling of 1379389 in words is "one million, three hundred seventy-nine thousand, three hundred eighty-nine".