1409389 has 8 divisors (see below), whose sum is σ = 1456128. Its totient is φ = 1363440.

The previous prime is 1409381. The next prime is 1409393. The reversal of 1409389 is 9839041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1409389 - 2³ = 1409381 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 (1409381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7284 + ... + 7474.

It is an arithmetic number, because the mean of its divisors is an integer number (182016).

2^1409389 is an apocalyptic number.

It is an amenable number.

1409389 is a deficient number, since it is larger than the sum of its proper divisors (46739).

1409389 is a wasteful number, since it uses less digits than its factorization.

1409389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1409389 is about 1187.1769034141. The cubic root of 1409389 is about 112.1184174828.

The spelling of 1409389 in words is "one million, four hundred nine thousand, three hundred eighty-nine".