3489685447 has 2 divisors, whose sum is σ = 3489685448. Its totient is φ = 3489685446.

The previous prime is 3489685417. The next prime is 3489685457. The reversal of 3489685447 is 7445869843.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3489685447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3489685391 and 3489685400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3489685417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1744842723 + 1744842724.

It is an arithmetic number, because the mean of its divisors is an integer number (1744842724).

Almost surely, 2^3489685447 is an apocalyptic number.

3489685447 is a deficient number, since it is larger than the sum of its proper divisors (1).

3489685447 is an equidigital number, since it uses as much as digits as its factorization.

3489685447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23224320, while the sum is 58.

The square root of 3489685447 is about 59073.5596269600. The cubic root of 3489685447 is about 1516.8015394502.

The spelling of 3489685447 in words is "three billion, four hundred eighty-nine million, six hundred eighty-five thousand, four hundred forty-seven".