289591093 has 4 divisors (see below), whose sum is σ = 315917568. Its totient is φ = 263264620.

The previous prime is 289591087. The next prime is 289591097. The reversal of 289591093 is 390195982.

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.

It is a cyclic number.

It is not a de Polignac number, because 289591093 - 2⁵ = 289591061 is a prime.

It is a super-2 number, since 2×289591093² = 167726002289869298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289591097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13163221 + ... + 13163242.

It is an arithmetic number, because the mean of its divisors is an integer number (78979392).

Almost surely, 2^289591093 is an apocalyptic number.

It is an amenable number.

289591093 is a deficient number, since it is larger than the sum of its proper divisors (26326475).

289591093 is a wasteful number, since it uses less digits than its factorization.

289591093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26326474.

The product of its (nonzero) digits is 174960, while the sum is 46.

The square root of 289591093 is about 17017.3762078647. The cubic root of 289591093 is about 661.5993451616.

The spelling of 289591093 in words is "two hundred eighty-nine million, five hundred ninety-one thousand, ninety-three".