9977412770 has 16 divisors (see below), whose sum is σ = 19340831160. Its totient is φ = 3683967744.

The previous prime is 9977412749. The next prime is 9977412817. The reversal of 9977412770 is 772147799.

It is a happy number.

It is a Cunningham number, because it is equal to 99887²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 7405807249 + 2571605521 = 86057^2 + 50711^2 .

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, 38374535 + ... + 38374794.

Almost surely, 2^9977412770 is an apocalyptic number.

9977412770 is a deficient number, since it is larger than the sum of its proper divisors (9363418390).

9977412770 is a wasteful number, since it uses less digits than its factorization.

9977412770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76749349.

The product of its (nonzero) digits is 1555848, while the sum is 53.

The square root of 9977412770 is about 99887.0000050057. Note that the first 5 decimals coincide. The cubic root of 9977412770 is about 2152.8113768173.

The spelling of 9977412770 in words is "nine billion, nine hundred seventy-seven million, four hundred twelve thousand, seven hundred seventy".