86984155 has 16 divisors (see below), whose sum is σ = 111157920. Its totient is φ = 65116672.

The previous prime is 86984153. The next prime is 86984167. The reversal of 86984155 is 55148968.

It is a cyclic number.

It is not a de Polignac number, because 86984155 - 2¹ = 86984153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86984153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12357 + ... + 18073.

It is an arithmetic number, because the mean of its divisors is an integer number (6947370).

Almost surely, 2^86984155 is an apocalyptic number.

86984155 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

86984155 is a deficient number, since it is larger than the sum of its proper divisors (24173765).

86984155 is a wasteful number, since it uses less digits than its factorization.

86984155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5918.

The product of its digits is 345600, while the sum is 46.

The square root of 86984155 is about 9326.5296332559. The cubic root of 86984155 is about 443.0778601723.

The spelling of 86984155 in words is "eighty-six million, nine hundred eighty-four thousand, one hundred fifty-five".