243908797 has 8 divisors (see below), whose sum is σ = 266226912. Its totient is φ = 221614800.

The previous prime is 243908789. The next prime is 243908807. The reversal of 243908797 is 797809342.

243908797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 243908797 - 2³ = 243908789 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 243908797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243948797) 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, 20047 + ... + 29827.

It is an arithmetic number, because the mean of its divisors is an integer number (33278364).

Almost surely, 2^243908797 is an apocalyptic number.

It is an amenable number.

243908797 is a deficient number, since it is larger than the sum of its proper divisors (22318115).

243908797 is a wasteful number, since it uses less digits than its factorization.

243908797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12059.

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 243908797 is about 15617.5797420727. The cubic root of 243908797 is about 624.8021107904.

The spelling of 243908797 in words is "two hundred forty-three million, nine hundred eight thousand, seven hundred ninety-seven".