84739780397 has 8 divisors (see below), whose sum is σ = 89526988800. Its totient is φ = 80076915184.

The previous prime is 84739780297. The next prime is 84739780409. The reversal of 84739780397 is 79308793748.

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

It is a cyclic number.

It is not a de Polignac number, because 84739780397 - 2²⁰ = 84738731821 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 (84739780297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31084397 + ... + 31087122.

It is an arithmetic number, because the mean of its divisors is an integer number (11190873600).

Almost surely, 2^84739780397 is an apocalyptic number.

It is an amenable number.

84739780397 is a deficient number, since it is larger than the sum of its proper divisors (4787208403).

84739780397 is a wasteful number, since it uses less digits than its factorization.

84739780397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62171595.

The product of its (nonzero) digits is 64012032, while the sum is 65.

The spelling of 84739780397 in words is "eighty-four billion, seven hundred thirty-nine million, seven hundred eighty thousand, three hundred ninety-seven".