39874358861 has 4 divisors (see below), whose sum is σ = 40076766972. Its totient is φ = 39671950752.

The previous prime is 39874358851. The next prime is 39874358863. The reversal of 39874358861 is 16885347893.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18829053961 + 21045304900 = 137219^2 + 145070^2 .

It is a cyclic number.

It is not a de Polignac number, because 39874358861 - 2²² = 39870164557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39874358794 and 39874358803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39874358863) 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 3 ways as a sum of consecutive naturals, for example, 101203760 + ... + 101204153.

It is an arithmetic number, because the mean of its divisors is an integer number (10019191743).

Almost surely, 2^39874358861 is an apocalyptic number.

It is an amenable number.

39874358861 is a deficient number, since it is larger than the sum of its proper divisors (202408111).

39874358861 is a wasteful number, since it uses less digits than its factorization.

39874358861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202408110.

The product of its digits is 34836480, while the sum is 62.

The spelling of 39874358861 in words is "thirty-nine billion, eight hundred seventy-four million, three hundred fifty-eight thousand, eight hundred sixty-one".