944893440 has 120 divisors (see below), whose sum is σ = 3272511528. Its totient is φ = 251965440.

The previous prime is 944893409. The next prime is 944893447. The reversal of 944893440 is 44398449.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×944893440² = 1785647225910067200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (944893447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2535 + ... + 43545.

Almost surely, 2^944893440 is an apocalyptic number.

944893440 is a gapful number since it is divisible by the number (90) 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 944893440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1636255764).

944893440 is an abundant number, since it is smaller than the sum of its proper divisors (2327618088).

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

944893440 is a wasteful number, since it uses less digits than its factorization.

944893440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41040 (or 41021 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 944893440 is about 30739.1190504868. The cubic root of 944893440 is about 981.2830065033.

The spelling of 944893440 in words is "nine hundred forty-four million, eight hundred ninety-three thousand, four hundred forty".