86979955 has 8 divisors (see below), whose sum is σ = 107743104. Its totient is φ = 67339200.

The previous prime is 86979953. The next prime is 86980001. The reversal of 86979955 is 55997968.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86979955 - 2¹ = 86979953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86979955.

It is not an unprimeable number, because it can be changed into a prime (86979953) 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, 280426 + ... + 280735.

It is an arithmetic number, because the mean of its divisors is an integer number (13467888).

Almost surely, 2^86979955 is an apocalyptic number.

86979955 is a deficient number, since it is larger than the sum of its proper divisors (20763149).

86979955 is a wasteful number, since it uses less digits than its factorization.

86979955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561197.

The product of its digits is 6123600, while the sum is 58.

The square root of 86979955 is about 9326.3044664004. The cubic root of 86979955 is about 443.0707287702.

The spelling of 86979955 in words is "eighty-six million, nine hundred seventy-nine thousand, nine hundred fifty-five".