920780799 has 8 divisors (see below), whose sum is σ = 1246032000. Its totient is φ = 604691736.

The previous prime is 920780797. The next prime is 920780803. The reversal of 920780799 is 997087029.

It is a happy number.

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

It is not a de Polignac number, because 920780799 - 2¹ = 920780797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920780797) 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, 2290299 + ... + 2290700.

It is an arithmetic number, because the mean of its divisors is an integer number (155754000).

Almost surely, 2^920780799 is an apocalyptic number.

920780799 is a deficient number, since it is larger than the sum of its proper divisors (325251201).

920780799 is a wasteful number, since it uses less digits than its factorization.

920780799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4581069.

The product of its (nonzero) digits is 571536, while the sum is 51.

The square root of 920780799 is about 30344.3701368145. The cubic root of 920780799 is about 972.8638920349.

The spelling of 920780799 in words is "nine hundred twenty million, seven hundred eighty thousand, seven hundred ninety-nine".