4979621 has 4 divisors (see below), whose sum is σ = 4990752. Its totient is φ = 4968492.

The previous prime is 4979617. The next prime is 4979627. The reversal of 4979621 is 1269794.

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 4979621 - 2² = 4979617 is a prime.

It is a super-3 number, since 3×4979621³ (a number of 21 digits) contains 333 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4979627) 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, 4865 + ... + 5798.

It is an arithmetic number, because the mean of its divisors is an integer number (1247688).

Almost surely, 2^4979621 is an apocalyptic number.

It is an amenable number.

4979621 is a deficient number, since it is larger than the sum of its proper divisors (11131).

4979621 is a wasteful number, since it uses less digits than its factorization.

4979621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11130.

The product of its digits is 27216, while the sum is 38.

The square root of 4979621 is about 2231.5064418460. The cubic root of 4979621 is about 170.7649609926.

The spelling of 4979621 in words is "four million, nine hundred seventy-nine thousand, six hundred twenty-one".