39494898665 has 8 divisors (see below), whose sum is σ = 47534515080. Its totient is φ = 31502161152.

The previous prime is 39494898649. The next prime is 39494898673. The reversal of 39494898665 is 56689849493.

It can be written as a sum of positive squares in 4 ways, for example, as 1259398144 + 38235500521 = 35488^2 + 195539^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 39494898665 - 2⁴ = 39494898649 is a prime.

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, 11717870 + ... + 11721239.

It is an arithmetic number, because the mean of its divisors is an integer number (5941814385).

Almost surely, 2^39494898665 is an apocalyptic number.

It is an amenable number.

39494898665 is a deficient number, since it is larger than the sum of its proper divisors (8039616415).

39494898665 is a wasteful number, since it uses less digits than its factorization.

39494898665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23439451.

The product of its digits is 403107840, while the sum is 71.

The spelling of 39494898665 in words is "thirty-nine billion, four hundred ninety-four million, eight hundred ninety-eight thousand, six hundred sixty-five".