478144445 has 8 divisors (see below), whose sum is σ = 574669536. Its totient is φ = 381918096.

The previous prime is 478144441. The next prime is 478144463. The reversal of 478144445 is 544441874.

It is a happy number.

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 478144445 - 2² = 478144441 is a prime.

It is a super-2 number, since 2×478144445² = 457244220568716050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478144441) 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, 71147 + ... + 77576.

It is an arithmetic number, because the mean of its divisors is an integer number (71833692).

Almost surely, 2^478144445 is an apocalyptic number.

It is an amenable number.

478144445 is a deficient number, since it is larger than the sum of its proper divisors (96525091).

478144445 is a wasteful number, since it uses less digits than its factorization.

478144445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149371.

The product of its digits is 286720, while the sum is 41.

The square root of 478144445 is about 21866.5142398143. The cubic root of 478144445 is about 781.9633014352.

The spelling of 478144445 in words is "four hundred seventy-eight million, one hundred forty-four thousand, four hundred forty-five".