944140536 has 96 divisors (see below), whose sum is σ = 2688482160. Its totient is φ = 310355712.

The previous prime is 944140531. The next prime is 944140541. The reversal of 944140536 is 635041449.

It is an interprime number because it is at equal distance from previous prime (944140531) and next prime (944140541).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 944140536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (944140531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138586 + ... + 145238.

Almost surely, 2^944140536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 944140536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1344241080).

944140536 is an abundant number, since it is smaller than the sum of its proper divisors (1744341624).

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

944140536 is a wasteful number, since it uses less digits than its factorization.

944140536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6747 (or 6731 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 944140536 is about 30726.8699349608. The cubic root of 944140536 is about 981.0223040127.

The spelling of 944140536 in words is "nine hundred forty-four million, one hundred forty thousand, five hundred thirty-six".