946649040839 has 4 divisors (see below), whose sum is σ = 968664134856. Its totient is φ = 924633946824.

The previous prime is 946649040797. The next prime is 946649040859. The reversal of 946649040839 is 938040946649.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 938040946649 = 71 ⋅13211844319.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-946649040839 is a prime.

It is a super-2 number, since 2×946649040839² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (946649040859) 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, 11007546944 + ... + 11007547029.

It is an arithmetic number, because the mean of its divisors is an integer number (242166033714).

Almost surely, 2^946649040839 is an apocalyptic number.

946649040839 is a deficient number, since it is larger than the sum of its proper divisors (22015094017).

946649040839 is a wasteful number, since it uses less digits than its factorization.

946649040839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22015094016.

The product of its (nonzero) digits is 40310784, while the sum is 62.

The spelling of 946649040839 in words is "nine hundred forty-six billion, six hundred forty-nine million, forty thousand, eight hundred thirty-nine".