840463441 has 4 divisors (see below), whose sum is σ = 840745584. Its totient is φ = 840181300.

The previous prime is 840463409. The next prime is 840463451. The reversal of 840463441 is 144364048.

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.

It is a cyclic number.

It is not a de Polignac number, because 840463441 - 2⁵ = 840463409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 840463397 and 840463406.

It is not an unprimeable number, because it can be changed into a prime (840463451) 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, 136555 + ... + 142576.

It is an arithmetic number, because the mean of its divisors is an integer number (210186396).

Almost surely, 2^840463441 is an apocalyptic number.

It is an amenable number.

840463441 is a deficient number, since it is larger than the sum of its proper divisors (282143).

840463441 is a wasteful number, since it uses less digits than its factorization.

840463441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282142.

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 840463441 is about 28990.7475067477. The cubic root of 840463441 is about 943.7122858136.

The spelling of 840463441 in words is "eight hundred forty million, four hundred sixty-three thousand, four hundred forty-one".