40821396 has 48 divisors (see below), whose sum is σ = 118755840. Its totient is φ = 10602720.

The previous prime is 40821359. The next prime is 40821401. The reversal of 40821396 is 69312804.

40821396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 21166 + ... + 23013.

It is an arithmetic number, because the mean of its divisors is an integer number (2474080).

Almost surely, 2^40821396 is an apocalyptic number.

It is an amenable number.

40821396 is an abundant number, since it is smaller than the sum of its proper divisors (77934444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40821396 is a wasteful number, since it uses less digits than its factorization.

40821396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44204 (or 44202 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 40821396 is about 6389.1623864165. The cubic root of 40821396 is about 344.3202916487.

The spelling of 40821396 in words is "forty million, eight hundred twenty-one thousand, three hundred ninety-six".