4959021 has 4 divisors (see below), whose sum is σ = 6612032. Its totient is φ = 3306012.

The previous prime is 4959013. The next prime is 4959037. The reversal of 4959021 is 1209594.

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 not a de Polignac number, because 4959021 - 2³ = 4959013 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4959021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4959041) 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, 826501 + ... + 826506.

It is an arithmetic number, because the mean of its divisors is an integer number (1653008).

Almost surely, 2^4959021 is an apocalyptic number.

It is an amenable number.

4959021 is a deficient number, since it is larger than the sum of its proper divisors (1653011).

4959021 is a wasteful number, since it uses less digits than its factorization.

4959021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653010.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 4959021 is about 2226.8859422970. The cubic root of 4959021 is about 170.5291585623.

The spelling of 4959021 in words is "four million, nine hundred fifty-nine thousand, twenty-one".