87429547 has 2 divisors, whose sum is σ = 87429548. Its totient is φ = 87429546.

The previous prime is 87429533. The next prime is 87429571. The reversal of 87429547 is 74592478.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87429547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87429497 and 87429506.

It is not a weakly prime, because it can be changed into another prime (87429047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43714773 + 43714774.

It is an arithmetic number, because the mean of its divisors is an integer number (43714774).

Almost surely, 2^87429547 is an apocalyptic number.

87429547 is a deficient number, since it is larger than the sum of its proper divisors (1).

87429547 is an equidigital number, since it uses as much as digits as its factorization.

87429547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 46.

The square root of 87429547 is about 9350.3768373259. The cubic root of 87429547 is about 443.8328155426.

The spelling of 87429547 in words is "eighty-seven million, four hundred twenty-nine thousand, five hundred forty-seven".