97390289 has 2 divisors, whose sum is σ = 97390290. Its totient is φ = 97390288.

The previous prime is 97390273. The next prime is 97390369. The reversal of 97390289 is 98209379.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56851600 + 40538689 = 7540^2 + 6367^2 .

It is a cyclic number.

It is not a de Polignac number, because 97390289 - 2⁴ = 97390273 is a prime.

It is not a weakly prime, because it can be changed into another prime (97395289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48695144 + 48695145.

It is an arithmetic number, because the mean of its divisors is an integer number (48695145).

Almost surely, 2^97390289 is an apocalyptic number.

It is an amenable number.

97390289 is a deficient number, since it is larger than the sum of its proper divisors (1).

97390289 is an equidigital number, since it uses as much as digits as its factorization.

97390289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 97390289 is about 9868.6518329506. The cubic root of 97390289 is about 460.0855055292.

It can be divided in two parts, 97390 and 289, that added together give a palindrome (97679).

The spelling of 97390289 in words is "ninety-seven million, three hundred ninety thousand, two hundred eighty-nine".