239846989 has 2 divisors, whose sum is σ = 239846990. Its totient is φ = 239846988.

The previous prime is 239846951. The next prime is 239847011. The reversal of 239846989 is 989648932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135908964 + 103938025 = 11658^2 + 10195^2 .

It is a cyclic number.

It is not a de Polignac number, because 239846989 - 2¹⁹ = 239322701 is a prime.

It is a super-2 number, since 2×239846989² = 115053156264732242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239846689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119923494 + 119923495.

It is an arithmetic number, because the mean of its divisors is an integer number (119923495).

Almost surely, 2^239846989 is an apocalyptic number.

It is an amenable number.

239846989 is a deficient number, since it is larger than the sum of its proper divisors (1).

239846989 is an equidigital number, since it uses as much as digits as its factorization.

239846989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6718464, while the sum is 58.

The square root of 239846989 is about 15486.9941886733. The cubic root of 239846989 is about 621.3144062388.

The spelling of 239846989 in words is "two hundred thirty-nine million, eight hundred forty-six thousand, nine hundred eighty-nine".