392780052893 has 4 divisors (see below), whose sum is σ = 392798284860. Its totient is φ = 392761820928.

The previous prime is 392780052803. The next prime is 392780052901. The reversal of 392780052893 is 398250087293.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35495313604 + 357284739289 = 188402^2 + 597733^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-392780052893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (392780052803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9083630 + ... + 9126767.

It is an arithmetic number, because the mean of its divisors is an integer number (98199571215).

Almost surely, 2^392780052893 is an apocalyptic number.

It is an amenable number.

392780052893 is a deficient number, since it is larger than the sum of its proper divisors (18231967).

392780052893 is a wasteful number, since it uses less digits than its factorization.

392780052893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18231966.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 392780052893 in words is "three hundred ninety-two billion, seven hundred eighty million, fifty-two thousand, eight hundred ninety-three".