97399481 has 2 divisors, whose sum is σ = 97399482. Its totient is φ = 97399480.

The previous prime is 97399439. The next prime is 97399507. The reversal of 97399481 is 18499379.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80712256 + 16687225 = 8984^2 + 4085^2 .

It is an emirp because it is prime and its reverse (18499379) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97399481 is a prime.

It is a super-2 number, since 2×97399481² = 18973317798138722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97399781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48699740 + 48699741.

It is an arithmetic number, because the mean of its divisors is an integer number (48699741).

Almost surely, 2^97399481 is an apocalyptic number.

It is an amenable number.

97399481 is a deficient number, since it is larger than the sum of its proper divisors (1).

97399481 is an equidigital number, since it uses as much as digits as its factorization.

97399481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 50.

The square root of 97399481 is about 9869.1175390711. The cubic root of 97399481 is about 460.0999798434.

The spelling of 97399481 in words is "ninety-seven million, three hundred ninety-nine thousand, four hundred eighty-one".