146638847 has 2 divisors, whose sum is σ = 146638848. Its totient is φ = 146638846.

The previous prime is 146638831. The next prime is 146638861. The reversal of 146638847 is 748836641.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 146638847 - 2⁴ = 146638831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146638867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73319423 + 73319424.

It is an arithmetic number, because the mean of its divisors is an integer number (73319424).

Almost surely, 2^146638847 is an apocalyptic number.

146638847 is a deficient number, since it is larger than the sum of its proper divisors (1).

146638847 is an equidigital number, since it uses as much as digits as its factorization.

146638847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 47.

The square root of 146638847 is about 12109.4527952340. The cubic root of 146638847 is about 527.3306474018.

The spelling of 146638847 in words is "one hundred forty-six million, six hundred thirty-eight thousand, eight hundred forty-seven".