4097173921 has 4 divisors (see below), whose sum is σ = 4105728000. Its totient is φ = 4088619844.

The previous prime is 4097173901. The next prime is 4097173943. The reversal of 4097173921 is 1293717904.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4097173921 - 2¹⁹ = 4096649633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4097173901) 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 3 ways as a sum of consecutive naturals, for example, 4276321 + ... + 4277278.

It is an arithmetic number, because the mean of its divisors is an integer number (1026432000).

Almost surely, 2^4097173921 is an apocalyptic number.

It is an amenable number.

4097173921 is a deficient number, since it is larger than the sum of its proper divisors (8554079).

4097173921 is an equidigital number, since it uses as much as digits as its factorization.

4097173921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8554078.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 4097173921 is about 64009.1706007819. The cubic root of 4097173921 is about 1600.1528396964.

The spelling of 4097173921 in words is "four billion, ninety-seven million, one hundred seventy-three thousand, nine hundred twenty-one".