1239489 has 16 divisors (see below), whose sum is σ = 1900800. Its totient is φ = 797328.

The previous prime is 1239481. The next prime is 1239499. The reversal of 1239489 is 9849321.

It is not a de Polignac number, because 1239489 - 2³ = 1239481 is a prime.

It is a super-2 number, since 2×1239489² = 3072665962242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1239481) 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, 9 + ... + 1574.

It is an arithmetic number, because the mean of its divisors is an integer number (118800).

2^1239489 is an apocalyptic number.

It is an amenable number.

1239489 is a deficient number, since it is larger than the sum of its proper divisors (661311).

1239489 is a wasteful number, since it uses less digits than its factorization.

1239489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621 (or 1615 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 1239489 is about 1113.3234031493. The cubic root of 1239489 is about 107.4189473765.

Adding to 1239489 its sum of digits (36), we get a triangular number (1239525 = T₁₅₇₄).

It can be divided in two parts, 1239 and 489, that added together give a cube (1728 = 12³).

The spelling of 1239489 in words is "one million, two hundred thirty-nine thousand, four hundred eighty-nine".