979691543 has 8 divisors (see below), whose sum is σ = 1046167680. Its totient is φ = 915395040.

The previous prime is 979691533. The next prime is 979691563. The reversal of 979691543 is 345196979.

It is a happy number.

979691543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 979691543 - 2¹⁶ = 979626007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979691533) 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, 543980 + ... + 545777.

It is an arithmetic number, because the mean of its divisors is an integer number (130770960).

Almost surely, 2^979691543 is an apocalyptic number.

979691543 is a deficient number, since it is larger than the sum of its proper divisors (66476137).

979691543 is a wasteful number, since it uses less digits than its factorization.

979691543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089817.

The product of its digits is 1837080, while the sum is 53.

The square root of 979691543 is about 31300.0246485526. The cubic root of 979691543 is about 993.1841642611.

The spelling of 979691543 in words is "nine hundred seventy-nine million, six hundred ninety-one thousand, five hundred forty-three".