843428941 has 4 divisors (see below), whose sum is σ = 844675452. Its totient is φ = 842182432.

The previous prime is 843428863. The next prime is 843428947. The reversal of 843428941 is 149824348.

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 727866441 + 115562500 = 26979^2 + 10750^2 .

It is a cyclic number.

It is not a de Polignac number, because 843428941 - 2⁷ = 843428813 is a prime.

It is a super-2 number, since 2×843428941² = 1422744757032762962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (843428947) 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, 622240 + ... + 623593.

It is an arithmetic number, because the mean of its divisors is an integer number (211168863).

Almost surely, 2^843428941 is an apocalyptic number.

It is an amenable number.

843428941 is a deficient number, since it is larger than the sum of its proper divisors (1246511).

843428941 is a wasteful number, since it uses less digits than its factorization.

843428941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246510.

The product of its digits is 221184, while the sum is 43.

The square root of 843428941 is about 29041.8480989072. The cubic root of 843428941 is about 944.8209176996.

The spelling of 843428941 in words is "eight hundred forty-three million, four hundred twenty-eight thousand, nine hundred forty-one".