84736249639 has 32 divisors (see below), whose sum is σ = 89444865600. Its totient is φ = 80207262720.

The previous prime is 84736249601. The next prime is 84736249643. The reversal of 84736249639 is 93694263748.

It is a cyclic number.

It is not a de Polignac number, because 84736249639 - 2⁹ = 84736249127 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 (84736249699) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52273249 + ... + 52274869.

It is an arithmetic number, because the mean of its divisors is an integer number (2795152050).

Almost surely, 2^84736249639 is an apocalyptic number.

84736249639 is a deficient number, since it is larger than the sum of its proper divisors (4708615961).

84736249639 is a wasteful number, since it uses less digits than its factorization.

84736249639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2035.

The product of its digits is 47029248, while the sum is 61.

The spelling of 84736249639 in words is "eighty-four billion, seven hundred thirty-six million, two hundred forty-nine thousand, six hundred thirty-nine".