1639089 has 16 divisors (see below), whose sum is σ = 2571840. Its totient is φ = 1028160.

The previous prime is 1639087. The next prime is 1639091. The reversal of 1639089 is 9809361.

It is an interprime number because it is at equal distance from previous prime (1639087) and next prime (1639091).

It is not a de Polignac number, because 1639089 - 2¹ = 1639087 is a prime.

It is a super-2 number, since 2×1639089² = 5373225499842, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1639081) 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, 1327 + ... + 2244.

It is an arithmetic number, because the mean of its divisors is an integer number (160740).

2^1639089 is an apocalyptic number.

It is an amenable number.

1639089 is a deficient number, since it is larger than the sum of its proper divisors (932751).

1639089 is a wasteful number, since it uses less digits than its factorization.

1639089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3597 (or 3591 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 1639089 is about 1280.2691123354. The cubic root of 1639089 is about 117.9055310162.

The spelling of 1639089 in words is "one million, six hundred thirty-nine thousand, eighty-nine".