2901989 has 2 divisors, whose sum is σ = 2901990. Its totient is φ = 2901988.

The previous prime is 2901931. The next prime is 2902049. The reversal of 2901989 is 9891092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2608225 + 293764 = 1615^2 + 542^2 .

It is a cyclic number.

It is not a de Polignac number, because 2901989 - 2¹² = 2897893 is a prime.

It is a super-2 number, since 2×2901989² = 16843080312242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2901919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1450994 + 1450995.

It is an arithmetic number, because the mean of its divisors is an integer number (1450995).

2^2901989 is an apocalyptic number.

It is an amenable number.

2901989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2901989 is an equidigital number, since it uses as much as digits as its factorization.

2901989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 2901989 is about 1703.5225270010. The cubic root of 2901989 is about 142.6369095603.

The spelling of 2901989 in words is "two million, nine hundred one thousand, nine hundred eighty-nine".