40008304738 has 4 divisors (see below), whose sum is σ = 60012457110. Its totient is φ = 20004152368.

The previous prime is 40008304733. The next prime is 40008304741. The reversal of 40008304738 is 83740380004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37359864369 + 2648440369 = 193287^2 + 51463^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40008304697 and 40008304706.

It is not an unprimeable number, because it can be changed into a prime (40008304733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002076183 + ... + 10002076186.

Almost surely, 2^40008304738 is an apocalyptic number.

40008304738 is a deficient number, since it is larger than the sum of its proper divisors (20004152372).

40008304738 is a wasteful number, since it uses less digits than its factorization.

40008304738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20004152371.

The product of its (nonzero) digits is 64512, while the sum is 37.

The spelling of 40008304738 in words is "forty billion, eight million, three hundred four thousand, seven hundred thirty-eight".