146623439 has 2 divisors, whose sum is σ = 146623440. Its totient is φ = 146623438.

The previous prime is 146623429. The next prime is 146623457. The reversal of 146623439 is 934326641.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146623439 is a prime.

It is a Sophie Germain 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 (146623429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73311719 + 73311720.

It is an arithmetic number, because the mean of its divisors is an integer number (73311720).

Almost surely, 2^146623439 is an apocalyptic number.

146623439 is a deficient number, since it is larger than the sum of its proper divisors (1).

146623439 is an equidigital number, since it uses as much as digits as its factorization.

146623439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 38.

The square root of 146623439 is about 12108.8165813179. The cubic root of 146623439 is about 527.3121770910.

The spelling of 146623439 in words is "one hundred forty-six million, six hundred twenty-three thousand, four hundred thirty-nine".