720141909 has 8 divisors (see below), whose sum is σ = 965939520. Its totient is φ = 477219456.

The previous prime is 720141901. The next prime is 720141911. The reversal of 720141909 is 909141027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 720141909 - 2³ = 720141901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 720141909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720141901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 718204 + ... + 719205.

It is an arithmetic number, because the mean of its divisors is an integer number (120742440).

Almost surely, 2^720141909 is an apocalyptic number.

It is an amenable number.

720141909 is a deficient number, since it is larger than the sum of its proper divisors (245797611).

720141909 is a wasteful number, since it uses less digits than its factorization.

720141909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437579.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 720141909 is about 26835.4599178028. The cubic root of 720141909 is about 896.3398298568.

The spelling of 720141909 in words is "seven hundred twenty million, one hundred forty-one thousand, nine hundred nine".