393143 has 2 divisors, whose sum is σ = 393144. Its totient is φ = 393142.

The previous prime is 393137. The next prime is 393157. The reversal of 393143 is 341393.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 393143 - 2⁶ = 393079 is a prime.

It is a super-2 number, since 2×393143² = 309122836898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (393103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196571 + 196572.

It is an arithmetic number, because the mean of its divisors is an integer number (196572).

2³⁹³¹⁴³ is an apocalyptic number.

393143 is a deficient number, since it is larger than the sum of its proper divisors (1).

393143 is an equidigital number, since it uses as much as digits as its factorization.

393143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 23.

The square root of 393143 is about 627.0111641749. The cubic root of 393143 is about 73.2571775981.

The spelling of 393143 in words is "three hundred ninety-three thousand, one hundred forty-three".