2980921 has 2 divisors, whose sum is σ = 2980922. Its totient is φ = 2980920.

The previous prime is 2980909. The next prime is 2980931. The reversal of 2980921 is 1290892.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2134521 + 846400 = 1461^2 + 920^2 .

It is a cyclic number.

It is not a de Polignac number, because 2980921 - 2¹³ = 2972729 is a prime.

2980921 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2980931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1490460 + 1490461.

It is an arithmetic number, because the mean of its divisors is an integer number (1490461).

2^2980921 is an apocalyptic number.

It is an amenable number.

2980921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2980921 is an equidigital number, since it uses as much as digits as its factorization.

2980921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 2980921 is about 1726.5343900427. The cubic root of 2980921 is about 143.9185657104.

The spelling of 2980921 in words is "two million, nine hundred eighty thousand, nine hundred twenty-one".