84259500421 has 8 divisors (see below), whose sum is σ = 84565025280. Its totient is φ = 83954516592.

The previous prime is 84259500419. The next prime is 84259500433. The reversal of 84259500421 is 12400595248.

It is a happy number.

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 84259500421 - 2¹ = 84259500419 is a prime.

It is a super-2 number, since 2×84259500421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84259500401) 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, 178096 + ... + 447478.

It is an arithmetic number, because the mean of its divisors is an integer number (10570628160).

Almost surely, 2^84259500421 is an apocalyptic number.

It is an amenable number.

84259500421 is a deficient number, since it is larger than the sum of its proper divisors (305524859).

84259500421 is a wasteful number, since it uses less digits than its factorization.

84259500421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270515.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 84259500421 in words is "eighty-four billion, two hundred fifty-nine million, five hundred thousand, four hundred twenty-one".