2043399605 has 8 divisors (see below), whose sum is σ = 2640701112. Its totient is φ = 1508971968.

The previous prime is 2043399587. The next prime is 2043399607. The reversal of 2043399605 is 5069933402.

It can be written as a sum of positive squares in 4 ways, for example, as 62615569 + 1980784036 = 7913^2 + 44506^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2043399605 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 (2043399607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15718394 + ... + 15718523.

It is an arithmetic number, because the mean of its divisors is an integer number (330087639).

Almost surely, 2^2043399605 is an apocalyptic number.

It is an amenable number.

2043399605 is a deficient number, since it is larger than the sum of its proper divisors (597301507).

2043399605 is a wasteful number, since it uses less digits than its factorization.

2043399605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31436935.

The product of its (nonzero) digits is 174960, while the sum is 41.

The square root of 2043399605 is about 45203.9777563878. The cubic root of 2043399605 is about 1268.9692599781.

The spelling of 2043399605 in words is "two billion, forty-three million, three hundred ninety-nine thousand, six hundred five".