97909957 has 8 divisors (see below), whose sum is σ = 99489600. Its totient is φ = 96342144.

The previous prime is 97909949. The next prime is 97909963. The reversal of 97909957 is 75990979.

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 97909957 - 2³ = 97909949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97909898 and 97909907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97909937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14544 + ... + 20182.

It is an arithmetic number, because the mean of its divisors is an integer number (12436200).

Almost surely, 2^97909957 is an apocalyptic number.

97909957 is a gapful number since it is divisible by the number (97) formed by its first and last digit.

It is an amenable number.

97909957 is a deficient number, since it is larger than the sum of its proper divisors (1579643).

97909957 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (97909956) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (5915).

97909957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5915.

The product of its (nonzero) digits is 1607445, while the sum is 55.

The square root of 97909957 is about 9894.9460332030. The cubic root of 97909957 is about 460.9023827012.

The spelling of 97909957 in words is "ninety-seven million, nine hundred nine thousand, nine hundred fifty-seven".