344444478 has 64 divisors (see below), whose sum is σ = 809464320. Its totient is φ = 95680512.

The previous prime is 344444473. The next prime is 344444479. The reversal of 344444478 is 874444443.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344444473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 239650 + ... + 241082.

It is an arithmetic number, because the mean of its divisors is an integer number (12647880).

Almost surely, 2^344444478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 344444478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404732160).

344444478 is an abundant number, since it is smaller than the sum of its proper divisors (465019842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

344444478 is a wasteful number, since it uses less digits than its factorization.

344444478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601.

The product of its digits is 688128, while the sum is 42.

The square root of 344444478 is about 18559.2154467801. The cubic root of 344444478 is about 700.9812619169.

The spelling of 344444478 in words is "three hundred forty-four million, four hundred forty-four thousand, four hundred seventy-eight".