84399639242 has 8 divisors (see below), whose sum is σ = 126619569732. Its totient is φ = 42193116000.

The previous prime is 84399639229. The next prime is 84399639251. The reversal of 84399639242 is 24293699348.

It can be written as a sum of positive squares in 2 ways, for example, as 80304791161 + 4094848081 = 283381^2 + 63991^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3336059 + ... + 3361262.

Almost surely, 2^84399639242 is an apocalyptic number.

84399639242 is a deficient number, since it is larger than the sum of its proper divisors (42219930490).

84399639242 is a wasteful number, since it uses less digits than its factorization.

84399639242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6703624.

The product of its digits is 20155392, while the sum is 59.

The spelling of 84399639242 in words is "eighty-four billion, three hundred ninety-nine million, six hundred thirty-nine thousand, two hundred forty-two".