97909955 has 32 divisors (see below), whose sum is σ = 141801408. Its totient is φ = 63936000.

The previous prime is 97909949. The next prime is 97909963. The reversal of 97909955 is 55990979.

It is not a de Polignac number, because 97909955 - 2⁶ = 97909891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97909897 and 97909906.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 24605 + ... + 28305.

It is an arithmetic number, because the mean of its divisors is an integer number (4431294).

Almost surely, 2^97909955 is an apocalyptic number.

97909955 is a deficient number, since it is larger than the sum of its proper divisors (43891453).

97909955 is a wasteful number, since it uses less digits than its factorization.

97909955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767.

The product of its (nonzero) digits is 1148175, while the sum is 53.

The square root of 97909955 is about 9894.9459321413. The cubic root of 97909955 is about 460.9023795629.

The spelling of 97909955 in words is "ninety-seven million, nine hundred nine thousand, nine hundred fifty-five".