97703989 has 2 divisors, whose sum is σ = 97703990. Its totient is φ = 97703988.

The previous prime is 97703959. The next prime is 97704001. The reversal of 97703989 is 98930779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65691025 + 32012964 = 8105^2 + 5658^2 .

It is a cyclic number.

It is not a de Polignac number, because 97703989 - 2⁹ = 97703477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97703959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48851994 + 48851995.

It is an arithmetic number, because the mean of its divisors is an integer number (48851995).

Almost surely, 2^97703989 is an apocalyptic number.

It is an amenable number.

97703989 is a deficient number, since it is larger than the sum of its proper divisors (1).

97703989 is an equidigital number, since it uses as much as digits as its factorization.

97703989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 857304, while the sum is 52.

The square root of 97703989 is about 9884.5328164765. The cubic root of 97703989 is about 460.5789638172.

The spelling of 97703989 in words is "ninety-seven million, seven hundred three thousand, nine hundred eighty-nine".