40322394 has 80 divisors (see below), whose sum is σ = 104869440. Its totient is φ = 11483640.

The previous prime is 40322377. The next prime is 40322423. The reversal of 40322394 is 49322304.

It is a happy number.

40322394 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 (27).

It is a Curzon number.

It is a nialpdrome in base 7.

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 39 ways as a sum of consecutive naturals, for example, 129499 + ... + 129809.

It is an arithmetic number, because the mean of its divisors is an integer number (1310868).

Almost surely, 2^40322394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40322394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52434720).

40322394 is an abundant number, since it is smaller than the sum of its proper divisors (64547046).

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

40322394 is an equidigital number, since it uses as much as digits as its factorization.

40322394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 40322394 is about 6349.9916535378. The cubic root of 40322394 is about 342.9115418148.

Adding to 40322394 its reverse (49322304), we get a palindrome (89644698).

The spelling of 40322394 in words is "forty million, three hundred twenty-two thousand, three hundred ninety-four".