1539489 has 8 divisors (see below), whose sum is σ = 2345920. Its totient is φ = 879696.

The previous prime is 1539479. The next prime is 1539521. The reversal of 1539489 is 9849351.

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

It is not a de Polignac number, because 1539489 - 2¹¹ = 1537441 is a prime.

It is a super-2 number, since 2×1539489² = 4740052762242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1539449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36634 + ... + 36675.

It is an arithmetic number, because the mean of its divisors is an integer number (293240).

2^1539489 is an apocalyptic number.

It is an amenable number.

1539489 is a deficient number, since it is larger than the sum of its proper divisors (806431).

1539489 is an equidigital number, since it uses as much as digits as its factorization.

1539489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73319.

The product of its digits is 38880, while the sum is 39.

The square root of 1539489 is about 1240.7614597496. The cubic root of 1539489 is about 115.4672608244.

The spelling of 1539489 in words is "one million, five hundred thirty-nine thousand, four hundred eighty-nine".