9976986436 has 6 divisors (see below), whose sum is σ = 17459726270. Its totient is φ = 4988493216.

The previous prime is 9976986347. The next prime is 9976986449. The reversal of 9976986436 is 6346896799.

It can be written as a sum of positive squares in only one way, i.e., 7375374400 + 2601612036 = 85880^2 + 51006^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1247123301 + ... + 1247123308.

Almost surely, 2^9976986436 is an apocalyptic number.

It is an amenable number.

9976986436 is a deficient number, since it is larger than the sum of its proper divisors (7482739834).

9976986436 is a wasteful number, since it uses less digits than its factorization.

9976986436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494246613 (or 2494246611 counting only the distinct ones).

The product of its digits is 105815808, while the sum is 67.

The square root of 9976986436 is about 99884.8659006959. The cubic root of 9976986436 is about 2152.7807132315.

The spelling of 9976986436 in words is "nine billion, nine hundred seventy-six million, nine hundred eighty-six thousand, four hundred thirty-six".