146689999 has 4 divisors (see below), whose sum is σ = 146816440. Its totient is φ = 146563560.

The previous prime is 146689997. The next prime is 146690009. The reversal of 146689999 is 999986641.

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 146689999 - 2¹ = 146689997 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146689993) 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, 61464 + ... + 63805.

It is an arithmetic number, because the mean of its divisors is an integer number (36704110).

Almost surely, 2^146689999 is an apocalyptic number.

146689999 is a deficient number, since it is larger than the sum of its proper divisors (126441).

146689999 is a wasteful number, since it uses less digits than its factorization.

146689999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126440.

The product of its digits is 7558272, while the sum is 61.

The square root of 146689999 is about 12111.5646800899. The cubic root of 146689999 is about 527.3919564887.

The spelling of 146689999 in words is "one hundred forty-six million, six hundred eighty-nine thousand, nine hundred ninety-nine".