284157943 has 2 divisors, whose sum is σ = 284157944. Its totient is φ = 284157942.

The previous prime is 284157931. The next prime is 284157949. The reversal of 284157943 is 349751482.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-284157943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 284157943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (284157949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142078971 + 142078972.

It is an arithmetic number, because the mean of its divisors is an integer number (142078972).

Almost surely, 2^284157943 is an apocalyptic number.

284157943 is a deficient number, since it is larger than the sum of its proper divisors (1).

284157943 is an equidigital number, since it uses as much as digits as its factorization.

284157943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The square root of 284157943 is about 16856.9849913916. The cubic root of 284157943 is about 657.4356748166.

The spelling of 284157943 in words is "two hundred eighty-four million, one hundred fifty-seven thousand, nine hundred forty-three".