144475406 has 4 divisors (see below), whose sum is σ = 216713112. Its totient is φ = 72237702.

The previous prime is 144475381. The next prime is 144475421. The reversal of 144475406 is 604574441.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 36118850 + ... + 36118853.

It is an arithmetic number, because the mean of its divisors is an integer number (54178278).

Almost surely, 2^144475406 is an apocalyptic number.

144475406 is a deficient number, since it is larger than the sum of its proper divisors (72237706).

144475406 is an equidigital number, since it uses as much as digits as its factorization.

144475406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72237705.

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 144475406 is about 12019.7922611000. The cubic root of 144475406 is about 524.7244582819.

The spelling of 144475406 in words is "one hundred forty-four million, four hundred seventy-five thousand, four hundred six".