144427407 has 4 divisors (see below), whose sum is σ = 192569880. Its totient is φ = 96284936.

The previous prime is 144427399. The next prime is 144427429. The reversal of 144427407 is 704724441.

It is a happy number.

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 144427407 - 2³ = 144427399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144427487) 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, 24071232 + ... + 24071237.

It is an arithmetic number, because the mean of its divisors is an integer number (48142470).

Almost surely, 2^144427407 is an apocalyptic number.

144427407 is a deficient number, since it is larger than the sum of its proper divisors (48142473).

144427407 is an equidigital number, since it uses as much as digits as its factorization.

144427407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48142472.

The product of its (nonzero) digits is 25088, while the sum is 33.

The square root of 144427407 is about 12017.7954301111. The cubic root of 144427407 is about 524.6663421875. Note that the first 3 decimals are identical.

The spelling of 144427407 in words is "one hundred forty-four million, four hundred twenty-seven thousand, four hundred seven".