84409854 has 16 divisors (see below), whose sum is σ = 168912000. Its totient is φ = 28121240.

The previous prime is 84409847. The next prime is 84409861. The reversal of 84409854 is 45890448.

It is an interprime number because it is at equal distance from previous prime (84409847) and next prime (84409861).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15649 + ... + 20339.

It is an arithmetic number, because the mean of its divisors is an integer number (10557000).

Almost surely, 2^84409854 is an apocalyptic number.

84409854 is an abundant number, since it is smaller than the sum of its proper divisors (84502146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84409854 is a wasteful number, since it uses less digits than its factorization.

84409854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7695.

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 84409854 is about 9187.4835510057. The cubic root of 84409854 is about 438.6630457301.

The spelling of 84409854 in words is "eighty-four million, four hundred nine thousand, eight hundred fifty-four".