4043942465 has 8 divisors (see below), whose sum is σ = 4853080680. Its totient is φ = 3234920832.

The previous prime is 4043942459. The next prime is 4043942477. The reversal of 4043942465 is 5642493404.

It is a happy number.

It is a Cunningham number, because it is equal to 63592²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 410143504 + 3633798961 = 20252^2 + 60281^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 4043942465 - 2²² = 4039748161 is a prime.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 96131 + ... + 131639.

It is an arithmetic number, because the mean of its divisors is an integer number (606635085).

Almost surely, 2^4043942465 is an apocalyptic number.

It is an amenable number.

4043942465 is a deficient number, since it is larger than the sum of its proper divisors (809138215).

4043942465 is a wasteful number, since it uses less digits than its factorization.

4043942465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58291.

The product of its (nonzero) digits is 414720, while the sum is 41.

The square root of 4043942465 is about 63592.0000078626. Note that the first 5 decimals coincide. The cubic root of 4043942465 is about 1593.1927545840.

The spelling of 4043942465 in words is "four billion, forty-three million, nine hundred forty-two thousand, four hundred sixty-five".