84212404749 has 12 divisors (see below), whose sum is σ = 132698334912. Its totient is φ = 51037821000.

The previous prime is 84212404747. The next prime is 84212404819. The reversal of 84212404749 is 94740421248.

It is not a de Polignac number, because 84212404749 - 2¹ = 84212404747 is a prime.

It is a super-2 number, since 2×84212404749² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84212404747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 425315077 + ... + 425315274.

It is an arithmetic number, because the mean of its divisors is an integer number (11058194576).

Almost surely, 2^84212404749 is an apocalyptic number.

It is an amenable number.

84212404749 is a deficient number, since it is larger than the sum of its proper divisors (48485930163).

84212404749 is a wasteful number, since it uses less digits than its factorization.

84212404749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850630368 (or 850630365 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 84212404749 in words is "eighty-four billion, two hundred twelve million, four hundred four thousand, seven hundred forty-nine".