979797 has 32 divisors (see below), whose sum is σ = 1668352. Its totient is φ = 497664.

The previous prime is 979787. The next prime is 979807. The reversal of 979797 is 797979.

979797 is nontrivially palindromic in base 6.

It is an interprime number because it is at equal distance from previous prime (979787) and next prime (979807).

It is not a de Polignac number, because 979797 - 2⁸ = 979541 is a prime.

It is a super-2 number, since 2×979797² = 1920004322418, which contains 22 as substring.

979797 is an undulating number in base 10.

979797 is a modest number, since divided by 9797 gives 97 as remainder.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979717) 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 31 ways as a sum of consecutive naturals, for example, 10053 + ... + 10149.

It is an arithmetic number, because the mean of its divisors is an integer number (52136).

2⁹⁷⁹⁷⁹⁷ is an apocalyptic number.

979797 is a gapful number since it is divisible by the number (97) formed by its first and last digit.

It is an amenable number.

979797 is a deficient number, since it is larger than the sum of its proper divisors (688555).

979797 is a wasteful number, since it uses less digits than its factorization.

979797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157.

The product of its digits is 250047, while the sum is 48.

The square root of 979797 is about 989.8469578677. The cubic root of 979797 is about 99.3219799445.

The spelling of 979797 in words is "nine hundred seventy-nine thousand, seven hundred ninety-seven".