393848890 has 16 divisors (see below), whose sum is σ = 709251840. Its totient is φ = 157467600.

The previous prime is 393848887. The next prime is 393848899. The reversal of 393848890 is 98848393.

393848890 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (393848899) 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, 17791 + ... + 33229.

It is an arithmetic number, because the mean of its divisors is an integer number (44328240).

Almost surely, 2^393848890 is an apocalyptic number.

393848890 is a deficient number, since it is larger than the sum of its proper divisors (315402950).

393848890 is a wasteful number, since it uses less digits than its factorization.

393848890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17997.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The square root of 393848890 is about 19845.6264703335. The cubic root of 393848890 is about 733.0099591231.

The spelling of 393848890 in words is "three hundred ninety-three million, eight hundred forty-eight thousand, eight hundred ninety".