2049491 has 2 divisors, whose sum is σ = 2049492. Its totient is φ = 2049490.

The previous prime is 2049451. The next prime is 2049493. The reversal of 2049491 is 1949402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2049491 - 2⁶ = 2049427 is a prime.

It is a super-3 number, since 3×2049491³ = 25826128127148833313, which contains 333 as substring.

Together with 2049493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2049493) 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, 1024745 + 1024746.

It is an arithmetic number, because the mean of its divisors is an integer number (1024746).

2^2049491 is an apocalyptic number.

2049491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2049491 is an equidigital number, since it uses as much as digits as its factorization.

2049491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 2049491 is about 1431.6043447825. The cubic root of 2049491 is about 127.0228945850.

The spelling of 2049491 in words is "two million, forty-nine thousand, four hundred ninety-one".