289490739 has 16 divisors (see below), whose sum is σ = 410108832. Its totient is φ = 181011968.

The previous prime is 289490737. The next prime is 289490753. The reversal of 289490739 is 937094982.

It is a cyclic number.

It is not a de Polignac number, because 289490739 - 2¹ = 289490737 is a prime.

It is a super-2 number, since 2×289490739² = 167609775933532242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 289490691 and 289490700.

It is not an unprimeable number, because it can be changed into a prime (289490737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5257 + ... + 24629.

It is an arithmetic number, because the mean of its divisors is an integer number (25631802).

Almost surely, 2^289490739 is an apocalyptic number.

289490739 is a deficient number, since it is larger than the sum of its proper divisors (120618093).

289490739 is a wasteful number, since it uses less digits than its factorization.

289490739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19686.

The product of its (nonzero) digits is 979776, while the sum is 51.

The square root of 289490739 is about 17014.4273779637. The cubic root of 289490739 is about 661.5229134698.

The spelling of 289490739 in words is "two hundred eighty-nine million, four hundred ninety thousand, seven hundred thirty-nine".