96915821 has 4 divisors (see below), whose sum is σ = 96937152. Its totient is φ = 96894492.

The previous prime is 96915817. The next prime is 96915823. The reversal of 96915821 is 12851969.

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 96915821 - 2² = 96915817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (96915823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821 + ... + 13946.

It is an arithmetic number, because the mean of its divisors is an integer number (24234288).

Almost surely, 2^96915821 is an apocalyptic number.

It is an amenable number.

96915821 is a deficient number, since it is larger than the sum of its proper divisors (21331).

96915821 is a wasteful number, since it uses less digits than its factorization.

96915821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21330.

The product of its digits is 38880, while the sum is 41.

The square root of 96915821 is about 9844.5833329806. The cubic root of 96915821 is about 459.3371375831.

The spelling of 96915821 in words is "ninety-six million, nine hundred fifteen thousand, eight hundred twenty-one".