84343957949 has 12 divisors (see below), whose sum is σ = 86131565244. Its totient is φ = 82564045824.

The previous prime is 84343957937. The next prime is 84343957963. The reversal of 84343957949 is 94975934348.

It can be written as a sum of positive squares in 2 ways, for example, as 44951632324 + 39392325625 = 212018^2 + 198475^2 .

It is not a de Polignac number, because 84343957949 - 2²⁴ = 84327180733 is a prime.

It is a super-2 number, since 2×84343957949² (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 (84343957979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11555069 + ... + 11562365.

It is an arithmetic number, because the mean of its divisors is an integer number (7177630437).

Almost surely, 2^84343957949 is an apocalyptic number.

It is an amenable number.

84343957949 is a deficient number, since it is larger than the sum of its proper divisors (1787607295).

84343957949 is an frugal number, since it uses more digits than its factorization.

84343957949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8284 (or 7817 counting only the distinct ones).

The product of its digits is 117573120, while the sum is 65.

The spelling of 84343957949 in words is "eighty-four billion, three hundred forty-three million, nine hundred fifty-seven thousand, nine hundred forty-nine".