40469730978 has 8 divisors (see below), whose sum is σ = 80939461968. Its totient is φ = 13489910324.

The previous prime is 40469730971. The next prime is 40469730991. The reversal of 40469730978 is 87903796404.

It is a sphenic number, since it is the product of 3 distinct primes.

40469730978 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (40469730971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3372477576 + ... + 3372477587.

It is an arithmetic number, because the mean of its divisors is an integer number (10117432746).

Almost surely, 2^40469730978 is an apocalyptic number.

40469730978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40469730978 is a wasteful number, since it uses less digits than its factorization.

40469730978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6744955168.

The product of its (nonzero) digits is 9144576, while the sum is 57.

The spelling of 40469730978 in words is "forty billion, four hundred sixty-nine million, seven hundred thirty thousand, nine hundred seventy-eight".