701808989 has 4 divisors (see below), whose sum is σ = 802067424. Its totient is φ = 601550556.

The previous prime is 701808973. The next prime is 701809033. The reversal of 701808989 is 989808107.

It is a happy number.

701808989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 701808989 - 2⁴ = 701808973 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 (701808929) 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, 50129207 + ... + 50129220.

It is an arithmetic number, because the mean of its divisors is an integer number (200516856).

Almost surely, 2^701808989 is an apocalyptic number.

It is an amenable number.

701808989 is a deficient number, since it is larger than the sum of its proper divisors (100258435).

701808989 is a wasteful number, since it uses less digits than its factorization.

701808989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100258434.

The product of its (nonzero) digits is 290304, while the sum is 50.

The square root of 701808989 is about 26491.6777309403. The cubic root of 701808989 is about 888.6682050425.

The spelling of 701808989 in words is "seven hundred one million, eight hundred eight thousand, nine hundred eighty-nine".