40308394 has 32 divisors (see below), whose sum is σ = 73560960. Its totient is φ = 16171008.

The previous prime is 40308383. The next prime is 40308421. The reversal of 40308394 is 49380304.

40308394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 60837 + ... + 61495.

It is an arithmetic number, because the mean of its divisors is an integer number (2298780).

Almost surely, 2^40308394 is an apocalyptic number.

40308394 is a deficient number, since it is larger than the sum of its proper divisors (33252566).

40308394 is a wasteful number, since it uses less digits than its factorization.

40308394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 40308394 is about 6348.8891941819. The cubic root of 40308394 is about 342.8718507414.

Adding to 40308394 its reverse (49380304), we get a palindrome (89688698).

The spelling of 40308394 in words is "forty million, three hundred eight thousand, three hundred ninety-four".