87409753 has 2 divisors, whose sum is σ = 87409754. Its totient is φ = 87409752.

The previous prime is 87409687. The next prime is 87409757. The reversal of 87409753 is 35790478.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87385104 + 24649 = 9348^2 + 157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87409753 is a prime.

It is not a weakly prime, because it can be changed into another prime (87409757) 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, 43704876 + 43704877.

It is an arithmetic number, because the mean of its divisors is an integer number (43704877).

Almost surely, 2^87409753 is an apocalyptic number.

It is an amenable number.

87409753 is a deficient number, since it is larger than the sum of its proper divisors (1).

87409753 is an equidigital number, since it uses as much as digits as its factorization.

87409753 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 87409753 is about 9349.3183173962. The cubic root of 87409753 is about 443.7993185151.

The spelling of 87409753 in words is "eighty-seven million, four hundred nine thousand, seven hundred fifty-three".