144445407 has 4 divisors (see below), whose sum is σ = 192593880. Its totient is φ = 96296936.

The previous prime is 144445403. The next prime is 144445459. The reversal of 144445407 is 704544441.

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

It is a cyclic number.

It is not a de Polignac number, because 144445407 - 2² = 144445403 is a prime.

It is a super-3 number, since 3×144445407³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144445403) 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, 24074232 + ... + 24074237.

It is an arithmetic number, because the mean of its divisors is an integer number (48148470).

Almost surely, 2^144445407 is an apocalyptic number.

144445407 is a deficient number, since it is larger than the sum of its proper divisors (48148473).

144445407 is an equidigital number, since it uses as much as digits as its factorization.

144445407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48148472.

The product of its (nonzero) digits is 35840, while the sum is 33.

The square root of 144445407 is about 12018.5442962116. The cubic root of 144445407 is about 524.6881376856.

Adding to 144445407 its reverse (704544441), we get a palindrome (848989848).

The spelling of 144445407 in words is "one hundred forty-four million, four hundred forty-five thousand, four hundred seven".