289747093 has 4 divisors (see below), whose sum is σ = 304996960. Its totient is φ = 274497228.

The previous prime is 289747079. The next prime is 289747097. The reversal of 289747093 is 390747982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 390747982 = 2 ⋅195373991.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289747093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289747097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7624905 + ... + 7624942.

It is an arithmetic number, because the mean of its divisors is an integer number (76249240).

Almost surely, 2^289747093 is an apocalyptic number.

It is an amenable number.

289747093 is a deficient number, since it is larger than the sum of its proper divisors (15249867).

289747093 is a wasteful number, since it uses less digits than its factorization.

289747093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15249866.

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 289747093 is about 17021.9591410625. The cubic root of 289747093 is about 661.7181229524.

The spelling of 289747093 in words is "two hundred eighty-nine million, seven hundred forty-seven thousand, ninety-three".