4615921 has 4 divisors (see below), whose sum is σ = 4723312. Its totient is φ = 4508532.

The previous prime is 4615867. The next prime is 4615927. The reversal of 4615921 is 1295164.

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 4615921 - 2⁹ = 4615409 is a prime.

It is a Duffinian number.

4615921 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4615921.

It is not an unprimeable number, because it can be changed into a prime (4615927) 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, 53631 + ... + 53716.

It is an arithmetic number, because the mean of its divisors is an integer number (1180828).

Almost surely, 2^4615921 is an apocalyptic number.

It is an amenable number.

4615921 is a deficient number, since it is larger than the sum of its proper divisors (107391).

4615921 is a wasteful number, since it uses less digits than its factorization.

4615921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107390.

The product of its digits is 2160, while the sum is 28.

The square root of 4615921 is about 2148.4694552169. The cubic root of 4615921 is about 166.5020004750.

The spelling of 4615921 in words is "four million, six hundred fifteen thousand, nine hundred twenty-one".