146440439 has 4 divisors (see below), whose sum is σ = 146780640. Its totient is φ = 146100240.

The previous prime is 146440423. The next prime is 146440447. The reversal of 146440439 is 934044641.

146440439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 934044641 = 2819 ⋅331339.

It is a cyclic number.

It is not a de Polignac number, because 146440439 - 2⁴ = 146440423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 146440399 and 146440408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146440139) 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, 169454 + ... + 170315.

It is an arithmetic number, because the mean of its divisors is an integer number (36695160).

Almost surely, 2^146440439 is an apocalyptic number.

146440439 is a deficient number, since it is larger than the sum of its proper divisors (340201).

146440439 is an equidigital number, since it uses as much as digits as its factorization.

146440439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340200.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 146440439 is about 12101.2577445487. The cubic root of 146440439 is about 527.0927071727.

The spelling of 146440439 in words is "one hundred forty-six million, four hundred forty thousand, four hundred thirty-nine".