84749131429 has 2 divisors, whose sum is σ = 84749131430. Its totient is φ = 84749131428.

The previous prime is 84749131339. The next prime is 84749131531. The reversal of 84749131429 is 92413194748.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65062235329 + 19686896100 = 255073^2 + 140310^2 .

It is a cyclic number.

It is not a de Polignac number, because 84749131429 - 2²¹ = 84747034277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84749101429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42374565714 + 42374565715.

It is an arithmetic number, because the mean of its divisors is an integer number (42374565715).

Almost surely, 2^84749131429 is an apocalyptic number.

It is an amenable number.

84749131429 is a deficient number, since it is larger than the sum of its proper divisors (1).

84749131429 is an equidigital number, since it uses as much as digits as its factorization.

84749131429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 52.

The spelling of 84749131429 in words is "eighty-four billion, seven hundred forty-nine million, one hundred thirty-one thousand, four hundred twenty-nine".