40448621 has 4 divisors (see below), whose sum is σ = 40472544. Its totient is φ = 40424700.

The previous prime is 40448579. The next prime is 40448641. The reversal of 40448621 is 12684404.

40448621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40448621 - 2¹⁴ = 40432237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40448641) 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 3 ways as a sum of consecutive naturals, for example, 9215 + ... + 12876.

It is an arithmetic number, because the mean of its divisors is an integer number (10118136).

Almost surely, 2^40448621 is an apocalyptic number.

It is an amenable number.

40448621 is a deficient number, since it is larger than the sum of its proper divisors (23923).

40448621 is a wasteful number, since it uses less digits than its factorization.

40448621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23922.

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 40448621 is about 6359.9230341255. The cubic root of 40448621 is about 343.2689908856.

The spelling of 40448621 in words is "forty million, four hundred forty-eight thousand, six hundred twenty-one".