146982989 has 4 divisors (see below), whose sum is σ = 147156156. Its totient is φ = 146809824.

The previous prime is 146982967. The next prime is 146983009. The reversal of 146982989 is 989289641.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6086089 + 140896900 = 2467^2 + 11870^2 .

It is a cyclic number.

It is not a de Polignac number, because 146982989 - 2¹⁶ = 146917453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146982919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85304 + ... + 87009.

It is an arithmetic number, because the mean of its divisors is an integer number (36789039).

Almost surely, 2^146982989 is an apocalyptic number.

It is an amenable number.

146982989 is a deficient number, since it is larger than the sum of its proper divisors (173167).

146982989 is an equidigital number, since it uses as much as digits as its factorization.

146982989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173166.

The product of its digits is 2239488, while the sum is 56.

The square root of 146982989 is about 12123.6541108694. The cubic root of 146982989 is about 527.7428502274.

The spelling of 146982989 in words is "one hundred forty-six million, nine hundred eighty-two thousand, nine hundred eighty-nine".