84889155 has 32 divisors (see below), whose sum is σ = 146986560. Its totient is φ = 41587200.

The previous prime is 84889127. The next prime is 84889157. The reversal of 84889155 is 55198848.

It is not a de Polignac number, because 84889155 - 2¹¹ = 84887107 is a prime.

It is a super-2 number, since 2×84889155² = 14412337273228050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84889157) 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, 43705 + ... + 45605.

It is an arithmetic number, because the mean of its divisors is an integer number (4593330).

Almost surely, 2^84889155 is an apocalyptic number.

84889155 is a deficient number, since it is larger than the sum of its proper divisors (62097405).

84889155 is a wasteful number, since it uses less digits than its factorization.

84889155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151.

The product of its digits is 460800, while the sum is 48.

The square root of 84889155 is about 9213.5310820553. The cubic root of 84889155 is about 439.4917599255.

The spelling of 84889155 in words is "eighty-four million, eight hundred eighty-nine thousand, one hundred fifty-five".