84049881 has 4 divisors (see below), whose sum is σ = 112066512. Its totient is φ = 56033252.

The previous prime is 84049873. The next prime is 84049919. The reversal of 84049881 is 18894048.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84049881 - 2³ = 84049873 is a prime.

It is a super-2 number, since 2×84049881² = 14128764992228322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84049811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14008311 + ... + 14008316.

It is an arithmetic number, because the mean of its divisors is an integer number (28016628).

Almost surely, 2^84049881 is an apocalyptic number.

It is an amenable number.

84049881 is a deficient number, since it is larger than the sum of its proper divisors (28016631).

84049881 is a wasteful number, since it uses less digits than its factorization.

84049881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28016630.

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 84049881 is about 9167.8722176959. The cubic root of 84049881 is about 438.0385852457.

It can be divided in two parts, 840 and 49881, that added together give a triangular number (50721 = T₃₁₈).

The spelling of 84049881 in words is "eighty-four million, forty-nine thousand, eight hundred eighty-one".