349209977 has 2 divisors, whose sum is σ = 349209978. Its totient is φ = 349209976.

The previous prime is 349209961. The next prime is 349210007. The reversal of 349209977 is 779902943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181144681 + 168065296 = 13459^2 + 12964^2 .

It is a cyclic number.

It is not a de Polignac number, because 349209977 - 2⁴ = 349209961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (349209907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174604988 + 174604989.

It is an arithmetic number, because the mean of its divisors is an integer number (174604989).

Almost surely, 2^349209977 is an apocalyptic number.

It is an amenable number.

349209977 is a deficient number, since it is larger than the sum of its proper divisors (1).

349209977 is an equidigital number, since it uses as much as digits as its factorization.

349209977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 857304, while the sum is 50.

The square root of 349209977 is about 18687.1607527735. The cubic root of 349209977 is about 704.1992329807.

The spelling of 349209977 in words is "three hundred forty-nine million, two hundred nine thousand, nine hundred seventy-seven".