39471904632890 has 16 divisors (see below), whose sum is σ = 72782341226280. Its totient is φ = 15403670100480.

The previous prime is 39471904632827. The next prime is 39471904632971. The reversal of 39471904632890 is 9823640917493.

It is a Cunningham number, because it is equal to 6282667²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 22857549835849 + 16614354797041 = 4780957^2 + 4076071^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48136468655 + ... + 48136469474.

Almost surely, 2^{39471904632890} is an apocalyptic number.

39471904632890 is a deficient number, since it is larger than the sum of its proper divisors (33310436593390).

39471904632890 is a wasteful number, since it uses less digits than its factorization.

39471904632890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96272938177.

The product of its (nonzero) digits is 70543872, while the sum is 65.

The spelling of 39471904632890 in words is "thirty-nine trillion, four hundred seventy-one billion, nine hundred four million, six hundred thirty-two thousand, eight hundred ninety".