979531 has 8 divisors (see below), whose sum is σ = 1147104. Its totient is φ = 818880.

The previous prime is 979529. The next prime is 979541. The reversal of 979531 is 135979.

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 979531 - 2¹ = 979529 is a prime.

It is a super-2 number, since 2×979531² = 1918961959922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (979541) 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, 1420 + ... + 1993.

It is an arithmetic number, because the mean of its divisors is an integer number (143388).

2⁹⁷⁹⁵³¹ is an apocalyptic number.

979531 is a deficient number, since it is larger than the sum of its proper divisors (167573).

979531 is a wasteful number, since it uses less digits than its factorization.

979531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3461.

The product of its digits is 8505, while the sum is 34.

The square root of 979531 is about 989.7125845416. The cubic root of 979531 is about 99.3129909948.

Adding to 979531 its product of digits (8505), we get a square (988036 = 994²).

The spelling of 979531 in words is "nine hundred seventy-nine thousand, five hundred thirty-one".