39490216643 has 16 divisors (see below), whose sum is σ = 41411369280. Its totient is φ = 37586457216.

The previous prime is 39490216637. The next prime is 39490216693. The reversal of 39490216643 is 34661209493.

It is not a de Polignac number, because 39490216643 - 2⁴ = 39490216627 is a prime.

It is a super-2 number, since 2×39490216643² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39490216693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5277821 + ... + 5285297.

It is an arithmetic number, because the mean of its divisors is an integer number (2588210580).

Almost surely, 2^39490216643 is an apocalyptic number.

39490216643 is a deficient number, since it is larger than the sum of its proper divisors (1921152637).

39490216643 is a wasteful number, since it uses less digits than its factorization.

39490216643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8606.

The product of its (nonzero) digits is 839808, while the sum is 47.

The spelling of 39490216643 in words is "thirty-nine billion, four hundred ninety million, two hundred sixteen thousand, six hundred forty-three".