40443012 has 36 divisors (see below), whose sum is σ = 102424140. Its totient is φ = 13455552.

The previous prime is 40442999. The next prime is 40443019. The reversal of 40443012 is 21034404.

Added to its reverse (21034404) it gives a triangular number (61477416 = T₁₁₀₈₈).

It can be written as a sum of positive squares in 2 ways, for example, as 298116 + 40144896 = 546^2 + 6336^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (40443019) 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, 35914 + ... + 37022.

It is an arithmetic number, because the mean of its divisors is an integer number (2845115).

Almost surely, 2^40443012 is an apocalyptic number.

It is an amenable number.

40443012 is an abundant number, since it is smaller than the sum of its proper divisors (61981128).

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

40443012 is a wasteful number, since it uses less digits than its factorization.

40443012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132 (or 2127 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 40443012 is about 6359.4820543815. The cubic root of 40443012 is about 343.2531231442.

Adding to 40443012 its reverse (21034404), we get a palindrome (61477416).

It can be divided in two parts, 4044 and 3012, that added together give a square (7056 = 84²).

The spelling of 40443012 in words is "forty million, four hundred forty-three thousand, twelve".