97209733 has 2 divisors, whose sum is σ = 97209734. Its totient is φ = 97209732.

The previous prime is 97209731. The next prime is 97209779. The reversal of 97209733 is 33790279.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97160449 + 49284 = 9857^2 + 222^2 .

It is a cyclic number.

It is not a de Polignac number, because 97209733 - 2¹ = 97209731 is a prime.

Together with 97209731, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97209731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48604866 + 48604867.

It is an arithmetic number, because the mean of its divisors is an integer number (48604867).

Almost surely, 2^97209733 is an apocalyptic number.

It is an amenable number.

97209733 is a deficient number, since it is larger than the sum of its proper divisors (1).

97209733 is an equidigital number, since it uses as much as digits as its factorization.

97209733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71442, while the sum is 40.

The square root of 97209733 is about 9859.4996323343. The cubic root of 97209733 is about 459.8010056106.

The spelling of 97209733 in words is "ninety-seven million, two hundred nine thousand, seven hundred thirty-three".