87447023 has 2 divisors, whose sum is σ = 87447024. Its totient is φ = 87447022.

The previous prime is 87447013. The next prime is 87447029. The reversal of 87447023 is 32074478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87447023 - 2⁴ = 87447007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87447029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43723511 + 43723512.

It is an arithmetic number, because the mean of its divisors is an integer number (43723512).

Almost surely, 2^87447023 is an apocalyptic number.

87447023 is a deficient number, since it is larger than the sum of its proper divisors (1).

87447023 is an equidigital number, since it uses as much as digits as its factorization.

87447023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 87447023 is about 9351.3112984223. The cubic root of 87447023 is about 443.8623856586.

The spelling of 87447023 in words is "eighty-seven million, four hundred forty-seven thousand, twenty-three".