241686989 has 2 divisors, whose sum is σ = 241686990. Its totient is φ = 241686988.

The previous prime is 241686983. The next prime is 241687001. The reversal of 241686989 is 989686142.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241553764 + 133225 = 15542^2 + 365^2 .

It is a cyclic number.

It is not a de Polignac number, because 241686989 - 2¹⁶ = 241621453 is a prime.

It is a super-2 number, since 2×241686989² = 116825201303772242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 241686989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241686983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120843494 + 120843495.

It is an arithmetic number, because the mean of its divisors is an integer number (120843495).

Almost surely, 2^241686989 is an apocalyptic number.

It is an amenable number.

241686989 is a deficient number, since it is larger than the sum of its proper divisors (1).

241686989 is an equidigital number, since it uses as much as digits as its factorization.

241686989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 53.

The square root of 241686989 is about 15546.2853762563. The cubic root of 241686989 is about 622.8991769937.

The spelling of 241686989 in words is "two hundred forty-one million, six hundred eighty-six thousand, nine hundred eighty-nine".