144380857 has 8 divisors (see below), whose sum is σ = 149184000. Its totient is φ = 139586880.

The previous prime is 144380809. The next prime is 144380869. The reversal of 144380857 is 758083441.

144380857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144380857 - 2¹¹ = 144378809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144380807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46644 + ... + 49642.

It is an arithmetic number, because the mean of its divisors is an integer number (18648000).

Almost surely, 2^144380857 is an apocalyptic number.

It is an amenable number.

144380857 is a deficient number, since it is larger than the sum of its proper divisors (4803143).

144380857 is a wasteful number, since it uses less digits than its factorization.

144380857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4583.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 144380857 is about 12015.8585627495. The cubic root of 144380857 is about 524.6099682090.

The spelling of 144380857 in words is "one hundred forty-four million, three hundred eighty thousand, eight hundred fifty-seven".