3449778887 has 2 divisors, whose sum is σ = 3449778888. Its totient is φ = 3449778886.

The previous prime is 3449778869. The next prime is 3449778961. The reversal of 3449778887 is 7888779443.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3449778887 - 2¹² = 3449774791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3449778817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1724889443 + 1724889444.

It is an arithmetic number, because the mean of its divisors is an integer number (1724889444).

Almost surely, 2^3449778887 is an apocalyptic number.

3449778887 is a deficient number, since it is larger than the sum of its proper divisors (1).

3449778887 is an equidigital number, since it uses as much as digits as its factorization.

3449778887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75866112, while the sum is 65.

The square root of 3449778887 is about 58734.8183533413. The cubic root of 3449778887 is about 1510.9975261893.

The spelling of 3449778887 in words is "three billion, four hundred forty-nine million, seven hundred seventy-eight thousand, eight hundred eighty-seven".