40744221 has 8 divisors (see below), whose sum is σ = 62086464. Its totient is φ = 23282400.

The previous prime is 40744181. The next prime is 40744229. The reversal of 40744221 is 12244704.

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

It is not a de Polignac number, because 40744221 - 2¹⁵ = 40711453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40744191 and 40744200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40744229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 970080 + ... + 970121.

It is an arithmetic number, because the mean of its divisors is an integer number (7760808).

Almost surely, 2^40744221 is an apocalyptic number.

It is an amenable number.

40744221 is a deficient number, since it is larger than the sum of its proper divisors (21342243).

40744221 is a wasteful number, since it uses less digits than its factorization.

40744221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940211.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 40744221 is about 6383.1200051386. The cubic root of 40744221 is about 344.1031695464.

Adding to 40744221 its reverse (12244704), we get a palindrome (52988925).

The spelling of 40744221 in words is "forty million, seven hundred forty-four thousand, two hundred twenty-one".