1389258 has 32 divisors (see below), whose sum is σ = 3326400. Its totient is φ = 427248.

The previous prime is 1389251. The next prime is 1389259. The reversal of 1389258 is 8529831.

It is not an unprimeable number, because it can be changed into a prime (1389251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288 + ... + 1691.

It is an arithmetic number, because the mean of its divisors is an integer number (103950).

2^1389258 is an apocalyptic number.

1389258 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1389258 is an abundant number, since it is smaller than the sum of its proper divisors (1937142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1389258 is a wasteful number, since it uses less digits than its factorization.

1389258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003 (or 1997 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 1389258 is about 1178.6678921562. The cubic root of 1389258 is about 111.5820412772.

The spelling of 1389258 in words is "one million, three hundred eighty-nine thousand, two hundred fifty-eight".