97449021 has 32 divisors (see below), whose sum is σ = 148229120. Its totient is φ = 63253872.

The previous prime is 97449017. The next prime is 97449031. The reversal of 97449021 is 12094479.

It is not a de Polignac number, because 97449021 - 2² = 97449017 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97449031) 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 31 ways as a sum of consecutive naturals, for example, 186066 + ... + 186588.

It is an arithmetic number, because the mean of its divisors is an integer number (4632160).

Almost surely, 2^97449021 is an apocalyptic number.

It is an amenable number.

97449021 is a deficient number, since it is larger than the sum of its proper divisors (50780099).

97449021 is a wasteful number, since it uses less digits than its factorization.

97449021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702 (or 696 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 97449021 is about 9871.6270695362. The cubic root of 97449021 is about 460.1779730367.

The spelling of 97449021 in words is "ninety-seven million, four hundred forty-nine thousand, twenty-one".