349658549 has 2 divisors, whose sum is σ = 349658550. Its totient is φ = 349658548.

The previous prime is 349658509. The next prime is 349658587. The reversal of 349658549 is 945856943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210772324 + 138886225 = 14518^2 + 11785^2 .

It is a cyclic number.

It is not a de Polignac number, because 349658549 - 2²⁴ = 332881333 is a prime.

It is a super-2 number, since 2×349658549² = 244522201777570802, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 349658549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349658509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174829274 + 174829275.

It is an arithmetic number, because the mean of its divisors is an integer number (174829275).

Almost surely, 2^349658549 is an apocalyptic number.

It is an amenable number.

349658549 is a deficient number, since it is larger than the sum of its proper divisors (1).

349658549 is an equidigital number, since it uses as much as digits as its factorization.

349658549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4665600, while the sum is 53.

The square root of 349658549 is about 18699.1590452619. The cubic root of 349658549 is about 704.5006265270.

The spelling of 349658549 in words is "three hundred forty-nine million, six hundred fifty-eight thousand, five hundred forty-nine".