1444697856 has 360 divisors, whose sum is σ = 5075088480. Its totient is φ = 400121856.

The previous prime is 1444697753. The next prime is 1444697857. The reversal of 1444697856 is 6587964441.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444697857) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5370490 + ... + 5370758.

It is an arithmetic number, because the mean of its divisors is an integer number (14097468).

Almost surely, 2^1444697856 is an apocalyptic number.

1444697856 is a gapful number since it is divisible by the number (16) 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 1444697856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2537544240).

1444697856 is an abundant number, since it is smaller than the sum of its proper divisors (3630390624).

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

1444697856 is an equidigital number, since it uses as much as digits as its factorization.

1444697856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 318 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 1444697856 is about 38009.1812066506. The cubic root of 1444697856 is about 1130.4699160239.

The spelling of 1444697856 in words is "one billion, four hundred forty-four million, six hundred ninety-seven thousand, eight hundred fifty-six".