87302729 has 2 divisors, whose sum is σ = 87302730. Its totient is φ = 87302728.

The previous prime is 87302707. The next prime is 87302737. The reversal of 87302729 is 92720378.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86918329 + 384400 = 9323^2 + 620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87302729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87302692 and 87302701.

It is not a weakly prime, because it can be changed into another prime (87302029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43651364 + 43651365.

It is an arithmetic number, because the mean of its divisors is an integer number (43651365).

Almost surely, 2^87302729 is an apocalyptic number.

It is an amenable number.

87302729 is a deficient number, since it is larger than the sum of its proper divisors (1).

87302729 is an equidigital number, since it uses as much as digits as its factorization.

87302729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 87302729 is about 9343.5929384793. The cubic root of 87302729 is about 443.6181160942.

The spelling of 87302729 in words is "eighty-seven million, three hundred two thousand, seven hundred twenty-nine".