40443623236 has 27 divisors (see below), whose sum is σ = 71281774263. Its totient is φ = 20078423040.

The previous prime is 40443623183. The next prime is 40443623257. The reversal of 40443623236 is 63232634404.

The square root of 40443623236 is 201106.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 8992728900 + 31450894336 = 94830^2 + 177344^2 .

It is a super-2 number, since 2×40443623236² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40443623195 and 40443623204.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 77626656 + ... + 77627176.

Almost surely, 2^40443623236 is an apocalyptic number.

40443623236 is the 201106-th square number.

It is an amenable number.

40443623236 is a deficient number, since it is larger than the sum of its proper divisors (30838151027).

40443623236 is an frugal number, since it uses more digits than its factorization.

40443623236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 37.

The spelling of 40443623236 in words is "forty billion, four hundred forty-three million, six hundred twenty-three thousand, two hundred thirty-six".