40798821 has 32 divisors (see below), whose sum is σ = 65536000. Its totient is φ = 22543920.

The previous prime is 40798799. The next prime is 40798829. The reversal of 40798821 is 12889704.

40798821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40798821 - 2⁵ = 40798789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40798821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40798829) 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 31 ways as a sum of consecutive naturals, for example, 31260 + ... + 32538.

It is an arithmetic number, because the mean of its divisors is an integer number (2048000).

Almost surely, 2^40798821 is an apocalyptic number.

It is an amenable number.

40798821 is a deficient number, since it is larger than the sum of its proper divisors (24737179).

40798821 is a wasteful number, since it uses less digits than its factorization.

40798821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334 (or 1320 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 40798821 is about 6387.3954785969. The cubic root of 40798821 is about 344.2568080783.

The spelling of 40798821 in words is "forty million, seven hundred ninety-eight thousand, eight hundred twenty-one".