4950821 has 8 divisors (see below), whose sum is σ = 5067384. Its totient is φ = 4835520.

The previous prime is 4950817. The next prime is 4950833. The reversal of 4950821 is 1280594.

It can be written as a sum of positive squares in 4 ways, for example, as 172225 + 4778596 = 415^2 + 2186^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4950821 - 2² = 4950817 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 (4950871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16751 + ... + 17043.

It is an arithmetic number, because the mean of its divisors is an integer number (633423).

Almost surely, 2^4950821 is an apocalyptic number.

It is an amenable number.

4950821 is a deficient number, since it is larger than the sum of its proper divisors (116563).

4950821 is a wasteful number, since it uses less digits than its factorization.

4950821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 4950821 is about 2225.0440445079. The cubic root of 4950821 is about 170.4351137531.

The spelling of 4950821 in words is "four million, nine hundred fifty thousand, eight hundred twenty-one".