348721889 has 2 divisors, whose sum is σ = 348721890. Its totient is φ = 348721888.

The previous prime is 348721859. The next prime is 348721907. The reversal of 348721889 is 988127843.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343917025 + 4804864 = 18545^2 + 2192^2 .

It is a cyclic number.

It is not a de Polignac number, because 348721889 - 2²⁴ = 331944673 is a prime.

It is not a weakly prime, because it can be changed into another prime (348721819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174360944 + 174360945.

It is an arithmetic number, because the mean of its divisors is an integer number (174360945).

Almost surely, 2^348721889 is an apocalyptic number.

It is an amenable number.

348721889 is a deficient number, since it is larger than the sum of its proper divisors (1).

348721889 is an equidigital number, since it uses as much as digits as its factorization.

348721889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 50.

The square root of 348721889 is about 18674.0967385306. The cubic root of 348721889 is about 703.8709954574.

The spelling of 348721889 in words is "three hundred forty-eight million, seven hundred twenty-one thousand, eight hundred eighty-nine".