349887653 has 2 divisors, whose sum is σ = 349887654. Its totient is φ = 349887652.

The previous prime is 349887631. The next prime is 349887677. The reversal of 349887653 is 356788943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318336964 + 31550689 = 17842^2 + 5617^2 .

It is a cyclic number.

It is not a de Polignac number, because 349887653 - 2⁶ = 349887589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 349887595 and 349887604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349887623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174943826 + 174943827.

It is an arithmetic number, because the mean of its divisors is an integer number (174943827).

Almost surely, 2^349887653 is an apocalyptic number.

It is an amenable number.

349887653 is a deficient number, since it is larger than the sum of its proper divisors (1).

349887653 is an equidigital number, since it uses as much as digits as its factorization.

349887653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 53.

The square root of 349887653 is about 18705.2840930043. The cubic root of 349887653 is about 704.6544610541.

The spelling of 349887653 in words is "three hundred forty-nine million, eight hundred eighty-seven thousand, six hundred fifty-three".