144374647 has 4 divisors (see below), whose sum is σ = 147446496. Its totient is φ = 141302800.

The previous prime is 144374641. The next prime is 144374651. The reversal of 144374647 is 746473441.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144374647 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 (144374641) 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, 1535854 + ... + 1535947.

It is an arithmetic number, because the mean of its divisors is an integer number (36861624).

Almost surely, 2^144374647 is an apocalyptic number.

144374647 is a deficient number, since it is larger than the sum of its proper divisors (3071849).

144374647 is an equidigital number, since it uses as much as digits as its factorization.

144374647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3071848.

The product of its digits is 225792, while the sum is 40.

The square root of 144374647 is about 12015.6001514698. The cubic root of 144374647 is about 524.6024467257.

The spelling of 144374647 in words is "one hundred forty-four million, three hundred seventy-four thousand, six hundred forty-seven".