39919966466 has 8 divisors (see below), whose sum is σ = 59881349244. Its totient is φ = 19959516720.

The previous prime is 39919966453. The next prime is 39919966469. The reversal of 39919966466 is 66466991993.

It can be written as a sum of positive squares in 2 ways, for example, as 36219799225 + 3700167241 = 190315^2 + 60829^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 39919966396 and 39919966405.

It is not an unprimeable number, because it can be changed into a prime (39919966469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114125 + ... + 304736.

Almost surely, 2^39919966466 is an apocalyptic number.

39919966466 is a deficient number, since it is larger than the sum of its proper divisors (19961382778).

39919966466 is a wasteful number, since it uses less digits than its factorization.

39919966466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466516.

The product of its digits is 102036672, while the sum is 68.

The spelling of 39919966466 in words is "thirty-nine billion, nine hundred nineteen million, nine hundred sixty-six thousand, four hundred sixty-six".