2990381 has 2 divisors, whose sum is σ = 2990382. Its totient is φ = 2990380.

The previous prime is 2990371. The next prime is 2990401. The reversal of 2990381 is 1830992.

2990381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1713481 + 1276900 = 1309^2 + 1130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2990381 is a prime.

It is a super-2 number, since 2×2990381² = 17884757050322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2990371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1495190 + 1495191.

It is an arithmetic number, because the mean of its divisors is an integer number (1495191).

2^2990381 is an apocalyptic number.

It is an amenable number.

2990381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2990381 is an equidigital number, since it uses as much as digits as its factorization.

2990381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 2990381 is about 1729.2718120643. The cubic root of 2990381 is about 144.0706475614.

The spelling of 2990381 in words is "two million, nine hundred ninety thousand, three hundred eighty-one".