97939945 has 8 divisors (see below), whose sum is σ = 117612936. Its totient is φ = 78295296.

The previous prime is 97939937. The next prime is 97939979. The reversal of 97939945 is 54993979.

It can be written as a sum of positive squares in 4 ways, for example, as 266256 + 97673689 = 516^2 + 9883^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97939945 - 2³ = 97939937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1459 + ... + 14071.

It is an arithmetic number, because the mean of its divisors is an integer number (14701617).

Almost surely, 2^97939945 is an apocalyptic number.

It is an amenable number.

97939945 is a deficient number, since it is larger than the sum of its proper divisors (19672991).

97939945 is a wasteful number, since it uses less digits than its factorization.

97939945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14171.

The product of its digits is 2755620, while the sum is 55.

The square root of 97939945 is about 9896.4612362197. The cubic root of 97939945 is about 460.9494331757.

The spelling of 97939945 in words is "ninety-seven million, nine hundred thirty-nine thousand, nine hundred forty-five".