146641447 has 2 divisors, whose sum is σ = 146641448. Its totient is φ = 146641446.

The previous prime is 146641423. The next prime is 146641463. The reversal of 146641447 is 744146641.

146641447 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 a de Polignac number, because none of the positive numbers 2^k-146641447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146641147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73320723 + 73320724.

It is an arithmetic number, because the mean of its divisors is an integer number (73320724).

Almost surely, 2^146641447 is an apocalyptic number.

146641447 is a deficient number, since it is larger than the sum of its proper divisors (1).

146641447 is an equidigital number, since it uses as much as digits as its factorization.

146641447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 37.

The square root of 146641447 is about 12109.5601489071. The cubic root of 146641447 is about 527.3337640193. Note that the first 3 decimals are identical.

The spelling of 146641447 in words is "one hundred forty-six million, six hundred forty-one thousand, four hundred forty-seven".