720090889 has 16 divisors (see below), whose sum is σ = 833130496. Its totient is φ = 609638400.

The previous prime is 720090829. The next prime is 720090893. The reversal of 720090889 is 988090027.

It is not a de Polignac number, because 720090889 - 2⁹ = 720090377 is a prime.

It is a super-3 number, since 3×720090889³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720090809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212569 + ... + 215929.

It is an arithmetic number, because the mean of its divisors is an integer number (52070656).

Almost surely, 2^720090889 is an apocalyptic number.

It is an amenable number.

720090889 is a deficient number, since it is larger than the sum of its proper divisors (113039607).

720090889 is a wasteful number, since it uses less digits than its factorization.

720090889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3736.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 720090889 is about 26834.5092930726. The cubic root of 720090889 is about 896.3186616502.

It can be divided in two parts, 7200 and 90889, that added together give a palindrome (98089).

The spelling of 720090889 in words is "seven hundred twenty million, ninety thousand, eight hundred eighty-nine".