40004240394 has 16 divisors (see below), whose sum is σ = 80012717280. Its totient is φ = 13334040720.

The previous prime is 40004240371. The next prime is 40004240461. The reversal of 40004240394 is 49304240004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46384 + ... + 286635.

It is an arithmetic number, because the mean of its divisors is an integer number (5000794830).

Almost surely, 2^40004240394 is an apocalyptic number.

40004240394 is an abundant number, since it is smaller than the sum of its proper divisors (40008476886).

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

40004240394 is a wasteful number, since it uses less digits than its factorization.

40004240394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353045.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 40004240394 its reverse (49304240004), we get a palindrome (89308480398).

The spelling of 40004240394 in words is "forty billion, four million, two hundred forty thousand, three hundred ninety-four".