3449603891 has 2 divisors, whose sum is σ = 3449603892. Its totient is φ = 3449603890.

The previous prime is 3449603887. The next prime is 3449603903. The reversal of 3449603891 is 1983069443.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3449603891 - 2² = 3449603887 is a prime.

It is not a weakly prime, because it can be changed into another prime (3449603851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1724801945 + 1724801946.

It is an arithmetic number, because the mean of its divisors is an integer number (1724801946).

Almost surely, 2^3449603891 is an apocalyptic number.

3449603891 is a deficient number, since it is larger than the sum of its proper divisors (1).

3449603891 is an equidigital number, since it uses as much as digits as its factorization.

3449603891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 3449603891 is about 58733.3286218311. The cubic root of 3449603891 is about 1510.9719764364.

The spelling of 3449603891 in words is "three billion, four hundred forty-nine million, six hundred three thousand, eight hundred ninety-one".