84959115431 has 4 divisors (see below), whose sum is σ = 84980091864. Its totient is φ = 84938139000.

The previous prime is 84959115419. The next prime is 84959115481. The reversal of 84959115431 is 13451195948.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84959115431 - 2¹⁴ = 84959099047 is a prime.

It is a super-2 number, since 2×84959115431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84959115431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84959115481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10482140 + ... + 10490241.

It is an arithmetic number, because the mean of its divisors is an integer number (21245022966).

Almost surely, 2^84959115431 is an apocalyptic number.

84959115431 is a deficient number, since it is larger than the sum of its proper divisors (20976433).

84959115431 is a wasteful number, since it uses less digits than its factorization.

84959115431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20976432.

The product of its digits is 777600, while the sum is 50.

The spelling of 84959115431 in words is "eighty-four billion, nine hundred fifty-nine million, one hundred fifteen thousand, four hundred thirty-one".