146458409 has 2 divisors, whose sum is σ = 146458410. Its totient is φ = 146458408.

The previous prime is 146458399. The next prime is 146458421. The reversal of 146458409 is 904854641.

146458409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111091600 + 35366809 = 10540^2 + 5947^2 .

It is an emirp because it is prime and its reverse (904854641) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146458409 is a prime.

It is a super-2 number, since 2×146458409² = 42900131133622562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (146458309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73229204 + 73229205.

It is an arithmetic number, because the mean of its divisors is an integer number (73229205).

Almost surely, 2^146458409 is an apocalyptic number.

It is an amenable number.

146458409 is a deficient number, since it is larger than the sum of its proper divisors (1).

146458409 is an equidigital number, since it uses as much as digits as its factorization.

146458409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 146458409 is about 12102.0002065774. Note that the first 3 decimals coincide. The cubic root of 146458409 is about 527.1142664920.

The spelling of 146458409 in words is "one hundred forty-six million, four hundred fifty-eight thousand, four hundred nine".