97173949 has 2 divisors, whose sum is σ = 97173950. Its totient is φ = 97173948.

The previous prime is 97173941. The next prime is 97173953. The reversal of 97173949 is 94937179.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91814724 + 5359225 = 9582^2 + 2315^2 .

It is an emirp because it is prime and its reverse (94937179) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97173949 - 2³ = 97173941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97173941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48586974 + 48586975.

It is an arithmetic number, because the mean of its divisors is an integer number (48586975).

Almost surely, 2^97173949 is an apocalyptic number.

It is an amenable number.

97173949 is a deficient number, since it is larger than the sum of its proper divisors (1).

97173949 is an equidigital number, since it uses as much as digits as its factorization.

97173949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 428652, while the sum is 49.

The square root of 97173949 is about 9857.6847687477. The cubic root of 97173949 is about 459.7445793728.

The spelling of 97173949 in words is "ninety-seven million, one hundred seventy-three thousand, nine hundred forty-nine".