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442439 is a prime number
BaseRepresentation
bin1101100000001000111
3211110220122
41230001013
5103124224
613252155
73521624
oct1540107
9743818
10442439
11282458
1219405b
131264ca
14b734b
158b15e
hex6c047

442439 has 2 divisors, whose sum is σ = 442440. Its totient is φ = 442438.

The previous prime is 442399. The next prime is 442447. The reversal of 442439 is 934244.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-442439 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221219 + 221220.

It is an arithmetic number, because the mean of its divisors is an integer number (221220).

2442439 is an apocalyptic number.

442439 is a deficient number, since it is larger than the sum of its proper divisors (1).

442439 is an equidigital number, since it uses as much as digits as its factorization.

442439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 26.

The square root of 442439 is about 665.1608827945. The cubic root of 442439 is about 76.1993267186.

The spelling of 442439 in words is "four hundred forty-two thousand, four hundred thirty-nine".