4003450666349 has 4 divisors (see below), whose sum is σ = 4003505142780. Its totient is φ = 4003396189920.

The previous prime is 4003450666339. The next prime is 4003450666381. The reversal of 4003450666349 is 9436660543004.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1962786990025 + 2040663676324 = 1400995^2 + 1428518^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4003450666349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4003450666297 and 4003450666306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4003450666339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27127832 + ... + 27275009.

It is an arithmetic number, because the mean of its divisors is an integer number (1000876285695).

Almost surely, 2^{4003450666349} is an apocalyptic number.

It is an amenable number.

4003450666349 is a deficient number, since it is larger than the sum of its proper divisors (54476431).

4003450666349 is an equidigital number, since it uses as much as digits as its factorization.

4003450666349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54476430.

The product of its (nonzero) digits is 5598720, while the sum is 50.

The spelling of 4003450666349 in words is "four trillion, three billion, four hundred fifty million, six hundred sixty-six thousand, three hundred forty-nine".