40743438 has 32 divisors (see below), whose sum is σ = 84166656. Its totient is φ = 13138848.

The previous prime is 40743431. The next prime is 40743449. The reversal of 40743438 is 83434704.

40743438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 40743399 and 40743408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40743431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49095 + ... + 49917.

It is an arithmetic number, because the mean of its divisors is an integer number (2630208).

Almost surely, 2^40743438 is an apocalyptic number.

40743438 is an abundant number, since it is smaller than the sum of its proper divisors (43423218).

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

40743438 is a wasteful number, since it uses less digits than its factorization.

40743438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088.

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 40743438 is about 6383.0586712014. The cubic root of 40743438 is about 344.1009652706.

The spelling of 40743438 in words is "forty million, seven hundred forty-three thousand, four hundred thirty-eight".