87479937829 has 2 divisors, whose sum is σ = 87479937830. Its totient is φ = 87479937828.

The previous prime is 87479937803. The next prime is 87479937859. The reversal of 87479937829 is 92873997478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56575001025 + 30904936804 = 237855^2 + 175798^2 .

It is a cyclic number.

It is not a de Polignac number, because 87479937829 - 2⁹ = 87479937317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87479937859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43739968914 + 43739968915.

It is an arithmetic number, because the mean of its divisors is an integer number (43739968915).

Almost surely, 2^87479937829 is an apocalyptic number.

It is an amenable number.

87479937829 is a deficient number, since it is larger than the sum of its proper divisors (1).

87479937829 is an equidigital number, since it uses as much as digits as its factorization.

87479937829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384072192, while the sum is 73.

The spelling of 87479937829 in words is "eighty-seven billion, four hundred seventy-nine million, nine hundred thirty-seven thousand, eight hundred twenty-nine".