2005454399 has 4 divisors (see below), whose sum is σ = 2159720136. Its totient is φ = 1851188664.

The previous prime is 2005454377. The next prime is 2005454411. The reversal of 2005454399 is 9934545002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2005454399 - 2¹² = 2005450303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005454329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77132849 + ... + 77132874.

It is an arithmetic number, because the mean of its divisors is an integer number (539930034).

Almost surely, 2^2005454399 is an apocalyptic number.

2005454399 is a deficient number, since it is larger than the sum of its proper divisors (154265737).

2005454399 is a wasteful number, since it uses less digits than its factorization.

2005454399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154265736.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 2005454399 is about 44782.3000637529. The cubic root of 2005454399 is about 1261.0653622875.

The spelling of 2005454399 in words is "two billion, five million, four hundred fifty-four thousand, three hundred ninety-nine".