705189889 has 4 divisors (see below), whose sum is σ = 717142320. Its totient is φ = 693237460.

The previous prime is 705189887. The next prime is 705189907. The reversal of 705189889 is 988981507.

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: 988981507 = 71 ⋅13929317.

It is a cyclic number.

It is not a de Polignac number, because 705189889 - 2¹ = 705189887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (705189887) 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, 5976127 + ... + 5976244.

It is an arithmetic number, because the mean of its divisors is an integer number (179285580).

Almost surely, 2^705189889 is an apocalyptic number.

It is an amenable number.

705189889 is a deficient number, since it is larger than the sum of its proper divisors (11952431).

705189889 is a wasteful number, since it uses less digits than its factorization.

705189889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11952430.

The product of its (nonzero) digits is 1451520, while the sum is 55.

The square root of 705189889 is about 26555.4116706934. The cubic root of 705189889 is about 890.0929453072.

The spelling of 705189889 in words is "seven hundred five million, one hundred eighty-nine thousand, eight hundred eighty-nine".