979769 has 4 divisors (see below), whose sum is σ = 1119744. Its totient is φ = 839796.

The previous prime is 979757. The next prime is 979787. The reversal of 979769 is 967979.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-979769 is a prime.

It is a super-2 number, since 2×979769² = 1919894586722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (979709) 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 3 ways as a sum of consecutive naturals, for example, 69977 + ... + 69990.

It is an arithmetic number, because the mean of its divisors is an integer number (279936).

979769 is a Friedman number, since it can be written as 6^9/(9+9/7)-7, using all its digits and the basic arithmetic operations.

2⁹⁷⁹⁷⁶⁹ is an apocalyptic number.

It is an amenable number.

979769 is a deficient number, since it is larger than the sum of its proper divisors (139975).

979769 is a wasteful number, since it uses less digits than its factorization.

979769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139974.

The product of its digits is 214326, while the sum is 47.

The square root of 979769 is about 989.8328141661. The cubic root of 979769 is about 99.3210338159.

The spelling of 979769 in words is "nine hundred seventy-nine thousand, seven hundred sixty-nine".