84455861 has 16 divisors (see below), whose sum is σ = 99408000. Its totient is φ = 71717184.

The previous prime is 84455857. The next prime is 84455869. The reversal of 84455861 is 16855448.

It is not a de Polignac number, because 84455861 - 2² = 84455857 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 (84455869) 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, 37670 + ... + 39848.

It is an arithmetic number, because the mean of its divisors is an integer number (6213000).

Almost surely, 2^84455861 is an apocalyptic number.

It is an amenable number.

84455861 is a deficient number, since it is larger than the sum of its proper divisors (14952139).

84455861 is a wasteful number, since it uses less digits than its factorization.

84455861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313 (or 2299 counting only the distinct ones).

The product of its digits is 153600, while the sum is 41.

The square root of 84455861 is about 9189.9869967264. The cubic root of 84455861 is about 438.7427279959.

The spelling of 84455861 in words is "eighty-four million, four hundred fifty-five thousand, eight hundred sixty-one".