4486921 has 4 divisors (see below), whose sum is σ = 4591312. Its totient is φ = 4382532.

The previous prime is 4486919. The next prime is 4486939. The reversal of 4486921 is 1296844.

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 4486921 - 2¹ = 4486919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4486961) 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, 52131 + ... + 52216.

It is an arithmetic number, because the mean of its divisors is an integer number (1147828).

Almost surely, 2^4486921 is an apocalyptic number.

It is an amenable number.

4486921 is a deficient number, since it is larger than the sum of its proper divisors (104391).

4486921 is a wasteful number, since it uses less digits than its factorization.

4486921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104390.

The product of its digits is 13824, while the sum is 34.

The square root of 4486921 is about 2118.2353504745. The cubic root of 4486921 is about 164.9362594324.

It can be divided in two parts, 44869 and 21, that multiplied together give a palindrome (942249).

The spelling of 4486921 in words is "four million, four hundred eighty-six thousand, nine hundred twenty-one".