840467 has 2 divisors, whose sum is σ = 840468. Its totient is φ = 840466.

The previous prime is 840457. The next prime is 840473. The reversal of 840467 is 764048.

840467 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 840467 - 2⁴ = 840451 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 840467.

It is not a weakly prime, because it can be changed into another prime (840457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420233 + 420234.

It is an arithmetic number, because the mean of its divisors is an integer number (420234).

2⁸⁴⁰⁴⁶⁷ is an apocalyptic number.

840467 is a deficient number, since it is larger than the sum of its proper divisors (1).

840467 is an equidigital number, since it uses as much as digits as its factorization.

840467 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 840467 is about 916.7698729779. The cubic root of 840467 is about 94.3713617883.

The spelling of 840467 in words is "eight hundred forty thousand, four hundred sixty-seven".