2981889 has 12 divisors (see below), whose sum is σ = 4412772. Its totient is φ = 1939200.

The previous prime is 2981887. The next prime is 2981897. The reversal of 2981889 is 9881892.

It can be written as a sum of positive squares in 2 ways, for example, as 501264 + 2480625 = 708^2 + 1575^2 .

It is not a de Polignac number, because 2981889 - 2¹ = 2981887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2981887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3672 + ... + 4409.

It is an arithmetic number, because the mean of its divisors is an integer number (367731).

It is a Proth number, since it is equal to 91 ⋅ 2¹⁵ + 1 and 91 < 2¹⁵.

2^2981889 is an apocalyptic number.

It is an amenable number.

2981889 is a deficient number, since it is larger than the sum of its proper divisors (1430883).

2981889 is a wasteful number, since it uses less digits than its factorization.

2981889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8128 (or 8125 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The square root of 2981889 is about 1726.8146976442. The cubic root of 2981889 is about 143.9341423386.

It can be divided in two parts, 298 and 1889, that added together give a 7-th power (2187 = 3⁷).

The spelling of 2981889 in words is "two million, nine hundred eighty-one thousand, eight hundred eighty-nine".