96421921 has 4 divisors (see below), whose sum is σ = 96825600. Its totient is φ = 96018244.

The previous prime is 96421879. The next prime is 96421933. The reversal of 96421921 is 12912469.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12912469 = 17 ⋅759557.

It is a cyclic number.

It is not a de Polignac number, because 96421921 - 2¹⁷ = 96290849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (96421951) 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 3 ways as a sum of consecutive naturals, for example, 201481 + ... + 201958.

It is an arithmetic number, because the mean of its divisors is an integer number (24206400).

Almost surely, 2^96421921 is an apocalyptic number.

It is an amenable number.

96421921 is a deficient number, since it is larger than the sum of its proper divisors (403679).

96421921 is a wasteful number, since it uses less digits than its factorization.

96421921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403678.

The product of its digits is 7776, while the sum is 34.

The square root of 96421921 is about 9819.4664315328. The cubic root of 96421921 is about 458.5555208195. Note that the first 4 decimals are identical.

The spelling of 96421921 in words is "ninety-six million, four hundred twenty-one thousand, nine hundred twenty-one".