1044190440 has 112 divisors (see below), whose sum is σ = 3522629700. Its totient is φ = 278443008.

The previous prime is 1044190421. The next prime is 1044190447. The reversal of 1044190440 is 440914401.

It can be written as a sum of positive squares in 2 ways, for example, as 1039288644 + 4901796 = 32238^2 + 2214^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1044190447) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 11256 + ... + 47064.

Almost surely, 2^1044190440 is an apocalyptic number.

1044190440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1044190440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1761314850).

1044190440 is an abundant number, since it is smaller than the sum of its proper divisors (2478439260).

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

1044190440 is an equidigital number, since it uses as much as digits as its factorization.

1044190440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35838 (or 35819 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1044190440 is about 32313.9356934435. The cubic root of 1044190440 is about 1014.5183442760.

The spelling of 1044190440 in words is "one billion, forty-four million, one hundred ninety thousand, four hundred forty".