87358109 has 2 divisors, whose sum is σ = 87358110. Its totient is φ = 87358108.

The previous prime is 87358099. The next prime is 87358133. The reversal of 87358109 is 90185378.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49042009 + 38316100 = 7003^2 + 6190^2 .

It is a cyclic number.

It is not a de Polignac number, because 87358109 - 2¹⁶ = 87292573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87358199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43679054 + 43679055.

It is an arithmetic number, because the mean of its divisors is an integer number (43679055).

Almost surely, 2^87358109 is an apocalyptic number.

It is an amenable number.

87358109 is a deficient number, since it is larger than the sum of its proper divisors (1).

87358109 is an equidigital number, since it uses as much as digits as its factorization.

87358109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 87358109 is about 9346.5559967295. Note that the first 3 decimals coincide. The cubic root of 87358109 is about 443.7118984941.

The spelling of 87358109 in words is "eighty-seven million, three hundred fifty-eight thousand, one hundred nine".