40392692338 has 16 divisors (see below), whose sum is σ = 62290922904. Its totient is φ = 19632608640.

The previous prime is 40392692317. The next prime is 40392692339. The reversal of 40392692338 is 83329629304.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20402408569 + 19990283769 = 142837^2 + 141387^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40392692291 and 40392692300.

It is not an unprimeable number, because it can be changed into a prime (40392692339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 866445 + ... + 911872.

Almost surely, 2^40392692338 is an apocalyptic number.

40392692338 is a deficient number, since it is larger than the sum of its proper divisors (21898230566).

40392692338 is a wasteful number, since it uses less digits than its factorization.

40392692338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778637.

The product of its (nonzero) digits is 1679616, while the sum is 49.

The spelling of 40392692338 in words is "forty billion, three hundred ninety-two million, six hundred ninety-two thousand, three hundred thirty-eight".