4939621 has 2 divisors, whose sum is σ = 4939622. Its totient is φ = 4939620.

The previous prime is 4939609. The next prime is 4939631. The reversal of 4939621 is 1269394.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2722500 + 2217121 = 1650^2 + 1489^2 .

It is a cyclic number.

It is not a de Polignac number, because 4939621 - 2¹¹ = 4937573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4939631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2469810 + 2469811.

It is an arithmetic number, because the mean of its divisors is an integer number (2469811).

Almost surely, 2^4939621 is an apocalyptic number.

It is an amenable number.

4939621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4939621 is an equidigital number, since it uses as much as digits as its factorization.

4939621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The square root of 4939621 is about 2222.5258153731. The cubic root of 4939621 is about 170.3064943762.

The spelling of 4939621 in words is "four million, nine hundred thirty-nine thousand, six hundred twenty-one".