1964447 has 2 divisors, whose sum is σ = 1964448. Its totient is φ = 1964446.

The previous prime is 1964437. The next prime is 1964461. The reversal of 1964447 is 7444691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1964447 - 2¹² = 1960351 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 (1964437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982223 + 982224.

It is an arithmetic number, because the mean of its divisors is an integer number (982224).

2^1964447 is an apocalyptic number.

1964447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964447 is an equidigital number, since it uses as much as digits as its factorization.

1964447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 1964447 is about 1401.5873144403. The cubic root of 1964447 is about 125.2410707802.

It can be divided in two parts, 19644 and 47, that added together give a palindrome (19691).

The spelling of 1964447 in words is "one million, nine hundred sixty-four thousand, four hundred forty-seven".