84229094981 has 4 divisors (see below), whose sum is σ = 84236398464. Its totient is φ = 84221791500.

The previous prime is 84229094969. The next prime is 84229095001. The reversal of 84229094981 is 18949092248.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84229094981 is a prime.

It is a super-2 number, since 2×84229094981² (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 (84229094281) 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, 3634415 + ... + 3657516.

It is an arithmetic number, because the mean of its divisors is an integer number (21059099616).

Almost surely, 2^84229094981 is an apocalyptic number.

It is an amenable number.

84229094981 is a deficient number, since it is larger than the sum of its proper divisors (7303483).

84229094981 is a wasteful number, since it uses less digits than its factorization.

84229094981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7303482.

The product of its (nonzero) digits is 2985984, while the sum is 56.

The spelling of 84229094981 in words is "eighty-four billion, two hundred twenty-nine million, ninety-four thousand, nine hundred eighty-one".