87399097 has 2 divisors, whose sum is σ = 87399098. Its totient is φ = 87399096.

The previous prime is 87399089. The next prime is 87399131. The reversal of 87399097 is 79099378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66275881 + 21123216 = 8141^2 + 4596^2 .

It is a cyclic number.

It is not a de Polignac number, because 87399097 - 2³ = 87399089 is a prime.

It is not a weakly prime, because it can be changed into another prime (87399497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43699548 + 43699549.

It is an arithmetic number, because the mean of its divisors is an integer number (43699549).

Almost surely, 2^87399097 is an apocalyptic number.

It is an amenable number.

87399097 is a deficient number, since it is larger than the sum of its proper divisors (1).

87399097 is an equidigital number, since it uses as much as digits as its factorization.

87399097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 857304, while the sum is 52.

The square root of 87399097 is about 9348.7484189061. The cubic root of 87399097 is about 443.7812834654.

The spelling of 87399097 in words is "eighty-seven million, three hundred ninety-nine thousand, ninety-seven".