2908421 has 2 divisors, whose sum is σ = 2908422. Its totient is φ = 2908420.

The previous prime is 2908397. The next prime is 2908429. The reversal of 2908421 is 1248092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2292196 + 616225 = 1514^2 + 785^2 .

It is a cyclic number.

It is not a de Polignac number, because 2908421 - 2¹⁴ = 2892037 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 (2908429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1454210 + 1454211.

It is an arithmetic number, because the mean of its divisors is an integer number (1454211).

2^2908421 is an apocalyptic number.

It is an amenable number.

2908421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2908421 is an equidigital number, since it uses as much as digits as its factorization.

2908421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2908421 is about 1705.4093350278. The cubic root of 2908421 is about 142.7422124666.

The spelling of 2908421 in words is "two million, nine hundred eight thousand, four hundred twenty-one".