920077247 has 8 divisors (see below), whose sum is σ = 974593296. Its totient is φ = 865604992.

The previous prime is 920077243. The next prime is 920077253. The reversal of 920077247 is 742770029.

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

It is a cyclic number.

It is not a de Polignac number, because 920077247 - 2² = 920077243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 920077247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920077243) 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, 38813 + ... + 57849.

It is an arithmetic number, because the mean of its divisors is an integer number (121824162).

Almost surely, 2^920077247 is an apocalyptic number.

920077247 is a deficient number, since it is larger than the sum of its proper divisors (54516049).

920077247 is a wasteful number, since it uses less digits than its factorization.

920077247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21897.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 920077247 is about 30332.7751285635. The cubic root of 920077247 is about 972.6160463154.

The spelling of 920077247 in words is "nine hundred twenty million, seventy-seven thousand, two hundred forty-seven".