87353909 has 2 divisors, whose sum is σ = 87353910. Its totient is φ = 87353908.

The previous prime is 87353897. The next prime is 87353933. The reversal of 87353909 is 90935378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86583025 + 770884 = 9305^2 + 878^2 .

It is a cyclic number.

It is not a de Polignac number, because 87353909 - 2¹⁶ = 87288373 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87353909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87353999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43676954 + 43676955.

It is an arithmetic number, because the mean of its divisors is an integer number (43676955).

Almost surely, 2^87353909 is an apocalyptic number.

It is an amenable number.

87353909 is a deficient number, since it is larger than the sum of its proper divisors (1).

87353909 is an equidigital number, since it uses as much as digits as its factorization.

87353909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 87353909 is about 9346.3313123385. The cubic root of 87353909 is about 443.7047874586.

The spelling of 87353909 in words is "eighty-seven million, three hundred fifty-three thousand, nine hundred nine".