2981399 has 2 divisors, whose sum is σ = 2981400. Its totient is φ = 2981398.

The previous prime is 2981387. The next prime is 2981401. The reversal of 2981399 is 9931892.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2981399 - 2⁴ = 2981383 is a prime.

Together with 2981401, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2981339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1490699 + 1490700.

It is an arithmetic number, because the mean of its divisors is an integer number (1490700).

2^2981399 is an apocalyptic number.

2981399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2981399 is an equidigital number, since it uses as much as digits as its factorization.

2981399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 41.

The square root of 2981399 is about 1726.6728120869. The cubic root of 2981399 is about 143.9262578966.

The spelling of 2981399 in words is "two million, nine hundred eighty-one thousand, three hundred ninety-nine".