40744821 has 8 divisors (see below), whose sum is σ = 58505440. Its totient is φ = 25073712.

The previous prime is 40744813. The next prime is 40744831. The reversal of 40744821 is 12844704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40744821 - 2³ = 40744813 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40744811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522331 + ... + 522408.

It is an arithmetic number, because the mean of its divisors is an integer number (7313180).

Almost surely, 2^40744821 is an apocalyptic number.

It is an amenable number.

40744821 is a deficient number, since it is larger than the sum of its proper divisors (17760619).

40744821 is a wasteful number, since it uses less digits than its factorization.

40744821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044755.

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 40744821 is about 6383.1670039252. The cubic root of 40744821 is about 344.1048586276.

The spelling of 40744821 in words is "forty million, seven hundred forty-four thousand, eight hundred twenty-one".