289540739 has 2 divisors, whose sum is σ = 289540740. Its totient is φ = 289540738.

The previous prime is 289540717. The next prime is 289540751. The reversal of 289540739 is 937045982.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 289540739 - 2²⁰ = 288492163 is a prime.

It is a super-2 number, since 2×289540739² = 167667679081332242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 289540693 and 289540702.

It is not a weakly prime, because it can be changed into another prime (289540439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144770369 + 144770370.

It is an arithmetic number, because the mean of its divisors is an integer number (144770370).

Almost surely, 2^289540739 is an apocalyptic number.

289540739 is a deficient number, since it is larger than the sum of its proper divisors (1).

289540739 is an equidigital number, since it uses as much as digits as its factorization.

289540739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 289540739 is about 17015.8966557746. The cubic root of 289540739 is about 661.5609967164.

It can be divided in two parts, 2895 and 40739, that added together give a palindrome (43634).

The spelling of 289540739 in words is "two hundred eighty-nine million, five hundred forty thousand, seven hundred thirty-nine".