1389474 has 28 divisors (see below), whose sum is σ = 3128166. Its totient is φ = 462672.

The previous prime is 1389473. The next prime is 1389481. The reversal of 1389474 is 4749831.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1225449 + 164025 = 1107^2 + 405^2 .

It is not an unprimeable number, because it can be changed into a prime (1389473) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 982 + ... + 1934.

2^1389474 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1389474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1564083).

1389474 is an abundant number, since it is smaller than the sum of its proper divisors (1738692).

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

1389474 is an frugal number, since it uses more digits than its factorization.

1389474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973 (or 958 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 1389474 is about 1178.7595174589. The cubic root of 1389474 is about 111.5878238537.

The spelling of 1389474 in words is "one million, three hundred eighty-nine thousand, four hundred seventy-four".