40603821 has 8 divisors (see below), whose sum is σ = 54167904. Its totient is φ = 27054480.

The previous prime is 40603807. The next prime is 40603853. The reversal of 40603821 is 12830604.

It is a happy number.

40603821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 40603821 - 2⁶ = 40603757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40603791 and 40603800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40603861) 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 7 ways as a sum of consecutive naturals, for example, 8535 + ... + 12411.

It is an arithmetic number, because the mean of its divisors is an integer number (6770988).

Almost surely, 2^40603821 is an apocalyptic number.

It is an amenable number.

40603821 is a deficient number, since it is larger than the sum of its proper divisors (13564083).

40603821 is a wasteful number, since it uses less digits than its factorization.

40603821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7371.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 40603821 is about 6372.1127579477. The cubic root of 40603821 is about 343.7074677515.

The spelling of 40603821 in words is "forty million, six hundred three thousand, eight hundred twenty-one".