3977387109 has 6 divisors (see below), whose sum is σ = 5745114726. Its totient is φ = 2651591400.

The previous prime is 3977387101. The next prime is 3977387131. The reversal of 3977387109 is 9017837793.

It is a happy number.

3977387109 is a `hidden beast` number, since 397 + 73 + 87 + 109 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3130402500 + 846984609 = 55950^2 + 29103^2 .

It is not a de Polignac number, because 3977387109 - 2³ = 3977387101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3977387101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 220965942 + ... + 220965959.

It is an arithmetic number, because the mean of its divisors is an integer number (957519121).

Almost surely, 2^3977387109 is an apocalyptic number.

It is an amenable number.

3977387109 is a deficient number, since it is larger than the sum of its proper divisors (1767727617).

3977387109 is a wasteful number, since it uses less digits than its factorization.

3977387109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441931907 (or 441931904 counting only the distinct ones).

The product of its (nonzero) digits is 2000376, while the sum is 54.

The square root of 3977387109 is about 63066.5292290610. The cubic root of 3977387109 is about 1584.4040867692.

The spelling of 3977387109 in words is "three billion, nine hundred seventy-seven million, three hundred eighty-seven thousand, one hundred nine".