40438512 has 60 divisors (see below), whose sum is σ = 119836080. Its totient is φ = 12685824.

The previous prime is 40438511. The next prime is 40438537. The reversal of 40438512 is 21583404.

It is a super-4 number, since 4×40438512⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40438511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5812 + ... + 10707.

It is an arithmetic number, because the mean of its divisors is an integer number (1997268).

Almost surely, 2^40438512 is an apocalyptic number.

It is an amenable number.

40438512 is an abundant number, since it is smaller than the sum of its proper divisors (79397568).

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

40438512 is a wasteful number, since it uses less digits than its factorization.

40438512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16550 (or 16541 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 40438512 is about 6359.1282421414. The cubic root of 40438512 is about 343.2403916795.

The spelling of 40438512 in words is "forty million, four hundred thirty-eight thousand, five hundred twelve".