2930021 has 2 divisors, whose sum is σ = 2930022. Its totient is φ = 2930020.

The previous prime is 2930003. The next prime is 2930033. The reversal of 2930021 is 1200392.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2927521 + 2500 = 1711^2 + 50^2 .

It is a cyclic number.

It is not a de Polignac number, because 2930021 - 2¹⁰ = 2928997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2930071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1465010 + 1465011.

It is an arithmetic number, because the mean of its divisors is an integer number (1465011).

2^2930021 is an apocalyptic number.

It is an amenable number.

2930021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2930021 is an equidigital number, since it uses as much as digits as its factorization.

2930021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2930021 is about 1711.7304110169. The cubic root of 2930021 is about 143.0947096200.

The spelling of 2930021 in words is "two million, nine hundred thirty thousand, twenty-one".