994294440 has 160 divisors (see below), whose sum is σ = 3354686280. Its totient is φ = 264135168.

The previous prime is 994294429. The next prime is 994294459. The reversal of 994294440 is 44492499.

It can be written as a sum of positive squares in 4 ways, for example, as 637764516 + 356529924 = 25254^2 + 18882^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1285894 + ... + 1286666.

Almost surely, 2^994294440 is an apocalyptic number.

994294440 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 994294440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1677343140).

994294440 is an abundant number, since it is smaller than the sum of its proper divisors (2360391840).

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

994294440 is a wasteful number, since it uses less digits than its factorization.

994294440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193 (or 1180 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 994294440 is about 31532.4347299729. The cubic root of 994294440 is about 998.0945181116.

The spelling of 994294440 in words is "nine hundred ninety-four million, two hundred ninety-four thousand, four hundred forty".