146493409 has 2 divisors, whose sum is σ = 146493410. Its totient is φ = 146493408.

The previous prime is 146493359. The next prime is 146493443. The reversal of 146493409 is 904394641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145926400 + 567009 = 12080^2 + 753^2 .

It is a cyclic number.

It is not a de Polignac number, because 146493409 - 2⁹ = 146492897 is a prime.

It is not a weakly prime, because it can be changed into another prime (146493469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73246704 + 73246705.

It is an arithmetic number, because the mean of its divisors is an integer number (73246705).

Almost surely, 2^146493409 is an apocalyptic number.

It is an amenable number.

146493409 is a deficient number, since it is larger than the sum of its proper divisors (1).

146493409 is an equidigital number, since it uses as much as digits as its factorization.

146493409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 146493409 is about 12103.4461621474. The cubic root of 146493409 is about 527.1562523136.

The spelling of 146493409 in words is "one hundred forty-six million, four hundred ninety-three thousand, four hundred nine".