3980000777 has 2 divisors, whose sum is σ = 3980000778. Its totient is φ = 3980000776.

The previous prime is 3980000767. The next prime is 3980000833. The reversal of 3980000777 is 7770000893.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2713993216 + 1266007561 = 52096^2 + 35581^2 .

It is a cyclic number.

It is not a de Polignac number, because 3980000777 - 2¹⁰ = 3979999753 is a prime.

It is not a weakly prime, because it can be changed into another prime (3980000767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1990000388 + 1990000389.

It is an arithmetic number, because the mean of its divisors is an integer number (1990000389).

Almost surely, 2^3980000777 is an apocalyptic number.

It is an amenable number.

3980000777 is a deficient number, since it is larger than the sum of its proper divisors (1).

3980000777 is an equidigital number, since it uses as much as digits as its factorization.

3980000777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74088, while the sum is 41.

The square root of 3980000777 is about 63087.2473404887. The cubic root of 3980000777 is about 1584.7510649397.

The spelling of 3980000777 in words is "three billion, nine hundred eighty million, seven hundred seventy-seven", and thus it is an aban number.