1389458 has 16 divisors (see below), whose sum is σ = 2422464. Its totient is φ = 585360.

The previous prime is 1389439. The next prime is 1389469. The reversal of 1389458 is 8549831.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41 + ... + 1667.

It is an arithmetic number, because the mean of its divisors is an integer number (151404).

2^1389458 is an apocalyptic number.

1389458 is a deficient number, since it is larger than the sum of its proper divisors (1033006).

1389458 is a wasteful number, since it uses less digits than its factorization.

1389458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697.

The product of its digits is 34560, while the sum is 38.

The square root of 1389458 is about 1178.7527306437. The cubic root of 1389458 is about 111.5873955352.

The spelling of 1389458 in words is "one million, three hundred eighty-nine thousand, four hundred fifty-eight".