979805 has 8 divisors (see below), whose sum is σ = 1185792. Its totient is φ = 777168.

The previous prime is 979787. The next prime is 979807. The reversal of 979805 is 508979.

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 979805 - 2⁸ = 979549 is a prime.

It is a super-3 number, since 3×979805³ = 2821890833358255375, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137 + ... + 1406.

It is an arithmetic number, because the mean of its divisors is an integer number (148224).

2⁹⁷⁹⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

979805 is a deficient number, since it is larger than the sum of its proper divisors (205987).

979805 is a wasteful number, since it uses less digits than its factorization.

979805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 979805 is about 989.8509988882. The cubic root of 979805 is about 99.3222502636.

The spelling of 979805 in words is "nine hundred seventy-nine thousand, eight hundred five".