87389297 has 2 divisors, whose sum is σ = 87389298. Its totient is φ = 87389296.

The previous prime is 87389293. The next prime is 87389311. The reversal of 87389297 is 79298378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87310336 + 78961 = 9344^2 + 281^2 .

It is a cyclic number.

It is not a de Polignac number, because 87389297 - 2² = 87389293 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87389293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43694648 + 43694649.

It is an arithmetic number, because the mean of its divisors is an integer number (43694649).

Almost surely, 2^87389297 is an apocalyptic number.

It is an amenable number.

87389297 is a deficient number, since it is larger than the sum of its proper divisors (1).

87389297 is an equidigital number, since it uses as much as digits as its factorization.

87389297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 53.

The square root of 87389297 is about 9348.2242698814. The cubic root of 87389297 is about 443.7646958831.

The spelling of 87389297 in words is "eighty-seven million, three hundred eighty-nine thousand, two hundred ninety-seven".