146399999 has 4 divisors (see below), whose sum is σ = 146447136. Its totient is φ = 146352864.

The previous prime is 146399989. The next prime is 146400013. The reversal of 146399999 is 999993641.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 146399999 - 2¹² = 146395903 is a prime.

It is a Duffinian number.

146399999 is a modest number, since divided by 99999 gives 1463 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146399989) 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, 18554 + ... + 25239.

It is an arithmetic number, because the mean of its divisors is an integer number (36611784).

Almost surely, 2^146399999 is an apocalyptic number.

146399999 is a deficient number, since it is larger than the sum of its proper divisors (47137).

146399999 is an equidigital number, since it uses as much as digits as its factorization.

146399999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47136.

The product of its digits is 4251528, while the sum is 59.

The square root of 146399999 is about 12099.5867284796. The cubic root of 146399999 is about 527.0441832548.

The spelling of 146399999 in words is "one hundred forty-six million, three hundred ninety-nine thousand, nine hundred ninety-nine".