97389221 has 4 divisors (see below), whose sum is σ = 100747500. Its totient is φ = 94030944.

The previous prime is 97389203. The next prime is 97389239. The reversal of 97389221 is 12298379.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (97389203) and next prime (97389239).

It can be written as a sum of positive squares in 2 ways, for example, as 82264900 + 15124321 = 9070^2 + 3889^2 .

It is a cyclic number.

It is not a de Polignac number, because 97389221 - 2¹⁰ = 97388197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97389241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1679096 + ... + 1679153.

It is an arithmetic number, because the mean of its divisors is an integer number (25186875).

Almost surely, 2^97389221 is an apocalyptic number.

It is an amenable number.

97389221 is a deficient number, since it is larger than the sum of its proper divisors (3358279).

97389221 is a wasteful number, since it uses less digits than its factorization.

97389221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3358278.

The product of its digits is 54432, while the sum is 41.

The square root of 97389221 is about 9868.5977220677. The cubic root of 97389221 is about 460.0838237287.

The spelling of 97389221 in words is "ninety-seven million, three hundred eighty-nine thousand, two hundred twenty-one".