348551989 has 2 divisors, whose sum is σ = 348551990. Its totient is φ = 348551988.

The previous prime is 348551963. The next prime is 348552019. The reversal of 348551989 is 989155843.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 341880100 + 6671889 = 18490^2 + 2583^2 .

It is a cyclic number.

It is not a de Polignac number, because 348551989 - 2¹⁵ = 348519221 is a prime.

It is a super-2 number, since 2×348551989² = 242976978071712242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (348551089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174275994 + 174275995.

It is an arithmetic number, because the mean of its divisors is an integer number (174275995).

Almost surely, 2^348551989 is an apocalyptic number.

It is an amenable number.

348551989 is a deficient number, since it is larger than the sum of its proper divisors (1).

348551989 is an equidigital number, since it uses as much as digits as its factorization.

348551989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1555200, while the sum is 52.

The square root of 348551989 is about 18669.5471021661. The cubic root of 348551989 is about 703.7566664247.

The spelling of 348551989 in words is "three hundred forty-eight million, five hundred fifty-one thousand, nine hundred eighty-nine".