146409609 has 4 divisors (see below), whose sum is σ = 195212816. Its totient is φ = 97606404.

The previous prime is 146409589. The next prime is 146409619. The reversal of 146409609 is 906904641.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 146409609 - 2⁸ = 146409353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146409619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24401599 + ... + 24401604.

It is an arithmetic number, because the mean of its divisors is an integer number (48803204).

Almost surely, 2^146409609 is an apocalyptic number.

It is an amenable number.

146409609 is a deficient number, since it is larger than the sum of its proper divisors (48803207).

146409609 is an equidigital number, since it uses as much as digits as its factorization.

146409609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48803206.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 146409609 is about 12099.9838429644. The cubic root of 146409609 is about 527.0557150941.

The spelling of 146409609 in words is "one hundred forty-six million, four hundred nine thousand, six hundred nine".