97920417 has 16 divisors (see below), whose sum is σ = 152683520. Its totient is φ = 54652752.

The previous prime is 97920401. The next prime is 97920419. The reversal of 97920417 is 71402979.

It is not a de Polignac number, because 97920417 - 2⁴ = 97920401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97920419) 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 15 ways as a sum of consecutive naturals, for example, 53317 + ... + 55122.

It is an arithmetic number, because the mean of its divisors is an integer number (9542720).

Almost surely, 2^97920417 is an apocalyptic number.

It is an amenable number.

97920417 is a deficient number, since it is larger than the sum of its proper divisors (54763103).

97920417 is a wasteful number, since it uses less digits than its factorization.

97920417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108492.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 97920417 is about 9895.4745717424. The cubic root of 97920417 is about 460.9187952889.

The spelling of 97920417 in words is "ninety-seven million, nine hundred twenty thousand, four hundred seventeen".