2839621 has 2 divisors, whose sum is σ = 2839622. Its totient is φ = 2839620.

The previous prime is 2839601. The next prime is 2839657. The reversal of 2839621 is 1269382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1726596 + 1113025 = 1314^2 + 1055^2 .

It is a cyclic number.

It is not a de Polignac number, because 2839621 - 2⁵ = 2839589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2839601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1419810 + 1419811.

It is an arithmetic number, because the mean of its divisors is an integer number (1419811).

2^2839621 is an apocalyptic number.

It is an amenable number.

2839621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2839621 is an equidigital number, since it uses as much as digits as its factorization.

2839621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The square root of 2839621 is about 1685.1175033214. The cubic root of 2839621 is about 141.6076752466.

The spelling of 2839621 in words is "two million, eight hundred thirty-nine thousand, six hundred twenty-one".