84405951973 has 16 divisors (see below), whose sum is σ = 96978397824. Its totient is φ = 71962309440.

The previous prime is 84405951923. The next prime is 84405952019. The reversal of 84405951973 is 37915950448.

It is a happy number.

It is not a de Polignac number, because 84405951973 - 2²⁵ = 84372397541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84405951913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10670886 + ... + 10678792.

It is an arithmetic number, because the mean of its divisors is an integer number (6061149864).

Almost surely, 2^84405951973 is an apocalyptic number.

It is an amenable number.

84405951973 is a deficient number, since it is larger than the sum of its proper divisors (12572445851).

84405951973 is a wasteful number, since it uses less digits than its factorization.

84405951973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15852.

The product of its (nonzero) digits is 5443200, while the sum is 55.

The spelling of 84405951973 in words is "eighty-four billion, four hundred five million, nine hundred fifty-one thousand, nine hundred seventy-three".