146489639 has 8 divisors (see below), whose sum is σ = 155934000. Its totient is φ = 137218752.

The previous prime is 146489633. The next prime is 146489641. The reversal of 146489639 is 936984641.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 146489639 - 2¹² = 146485543 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 (146489633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41624 + ... + 45005.

It is an arithmetic number, because the mean of its divisors is an integer number (19491750).

Almost surely, 2^146489639 is an apocalyptic number.

146489639 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

146489639 is a deficient number, since it is larger than the sum of its proper divisors (9444361).

146489639 is an equidigital number, since it uses as much as digits as its factorization.

146489639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86737.

The product of its digits is 1119744, while the sum is 50.

The square root of 146489639 is about 12103.2904203774. The cubic root of 146489639 is about 527.1517301622.

The spelling of 146489639 in words is "one hundred forty-six million, four hundred eighty-nine thousand, six hundred thirty-nine".