146632989 has 4 divisors (see below), whose sum is σ = 195510656. Its totient is φ = 97755324.

The previous prime is 146632949. The next prime is 146632999. The reversal of 146632989 is 989236641.

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, and also an emirpimes, since its reverse is a distinct semiprime: 989236641 = 3 ⋅329745547.

It is not a de Polignac number, because 146632989 - 2⁹ = 146632477 is a prime.

It is a super-3 number, since 3×146632989³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146632909) 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, 24438829 + ... + 24438834.

It is an arithmetic number, because the mean of its divisors is an integer number (48877664).

Almost surely, 2^146632989 is an apocalyptic number.

It is an amenable number.

146632989 is a deficient number, since it is larger than the sum of its proper divisors (48877667).

146632989 is an equidigital number, since it uses as much as digits as its factorization.

146632989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48877666.

The product of its digits is 559872, while the sum is 48.

The square root of 146632989 is about 12109.2109156625. The cubic root of 146632989 is about 527.3236252879.

The spelling of 146632989 in words is "one hundred forty-six million, six hundred thirty-two thousand, nine hundred eighty-nine".