2981387 has 2 divisors, whose sum is σ = 2981388. Its totient is φ = 2981386.

The previous prime is 2981383. The next prime is 2981399. The reversal of 2981387 is 7831892.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2981387 - 2² = 2981383 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2981387.

It is not a weakly prime, because it can be changed into another prime (2981383) 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, 1490693 + 1490694.

It is an arithmetic number, because the mean of its divisors is an integer number (1490694).

2^2981387 is an apocalyptic number.

2981387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2981387 is an equidigital number, since it uses as much as digits as its factorization.

2981387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 2981387 is about 1726.6693371923. The cubic root of 2981387 is about 143.9260647973.

The spelling of 2981387 in words is "two million, nine hundred eighty-one thousand, three hundred eighty-seven".