1979089 has 8 divisors (see below), whose sum is σ = 2395008. Its totient is φ = 1596480.

The previous prime is 1979077. The next prime is 1979101. The reversal of 1979089 is 9809791.

It is an interprime number because it is at equal distance from previous prime (1979077) and next prime (1979101).

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

It is a cyclic number.

It is not a de Polignac number, because 1979089 - 2⁵ = 1979057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1979039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8197 + ... + 8434.

It is an arithmetic number, because the mean of its divisors is an integer number (299376).

2^1979089 is an apocalyptic number.

It is an amenable number.

1979089 is a deficient number, since it is larger than the sum of its proper divisors (415919).

1979089 is a wasteful number, since it uses less digits than its factorization.

1979089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16655.

The product of its (nonzero) digits is 40824, while the sum is 43.

The square root of 1979089 is about 1406.8009809493. The cubic root of 1979089 is about 125.5514622044.

The spelling of 1979089 in words is "one million, nine hundred seventy-nine thousand, eighty-nine".