40821394 has 8 divisors (see below), whose sum is σ = 61608240. Its totient is φ = 20285316.

The previous prime is 40821359. The next prime is 40821401. The reversal of 40821394 is 49312804.

40821394 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 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 3 ways as a sum of consecutive naturals, for example, 62284 + ... + 62935.

It is an arithmetic number, because the mean of its divisors is an integer number (7701030).

Almost surely, 2^40821394 is an apocalyptic number.

40821394 is a deficient number, since it is larger than the sum of its proper divisors (20786846).

40821394 is a wasteful number, since it uses less digits than its factorization.

40821394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125384.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 40821394 is about 6389.1622299015. The cubic root of 40821394 is about 344.3202860255.

It can be divided in two parts, 4082 and 1394, that added together give a square (5476 = 74²).

The spelling of 40821394 in words is "forty million, eight hundred twenty-one thousand, three hundred ninety-four".