393143141 has 4 divisors (see below), whose sum is σ = 393192000. Its totient is φ = 393094284.

The previous prime is 393143129. The next prime is 393143251. The reversal of 393143141 is 141341393.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-393143141 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 (393143441) 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, 9191 + ... + 29508.

It is an arithmetic number, because the mean of its divisors is an integer number (98298000).

Almost surely, 2^393143141 is an apocalyptic number.

It is an amenable number.

393143141 is a deficient number, since it is larger than the sum of its proper divisors (48859).

393143141 is a wasteful number, since it uses less digits than its factorization.

393143141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48858.

The product of its digits is 3888, while the sum is 29.

The square root of 393143141 is about 19827.8375270729. The cubic root of 393143141 is about 732.5718635595.

The spelling of 393143141 in words is "three hundred ninety-three million, one hundred forty-three thousand, one hundred forty-one".