1444455474 has 128 divisors (see below), whose sum is σ = 3684925440. Its totient is φ = 366638400.

The previous prime is 1444455457. The next prime is 1444455497. The reversal of 1444455474 is 4745544441.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5329959 + ... + 5330229.

It is an arithmetic number, because the mean of its divisors is an integer number (28788480).

Almost surely, 2^1444455474 is an apocalyptic number.

1444455474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1444455474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1842462720).

1444455474 is an abundant number, since it is smaller than the sum of its proper divisors (2240469966).

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

1444455474 is a wasteful number, since it uses less digits than its factorization.

1444455474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516.

The product of its digits is 716800, while the sum is 42.

The square root of 1444455474 is about 38005.9926064298. The cubic root of 1444455474 is about 1130.4066915273.

The spelling of 1444455474 in words is "one billion, four hundred forty-four million, four hundred fifty-five thousand, four hundred seventy-four".