3977667794 has 16 divisors (see below), whose sum is σ = 6247184832. Its totient is φ = 1895863728.

The previous prime is 3977667791. The next prime is 3977667853. The reversal of 3977667794 is 4977667793.

3977667794 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3977667794.

It is not an unprimeable number, because it can be changed into a prime (3977667791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134084 + ... + 161039.

It is an arithmetic number, because the mean of its divisors is an integer number (390449052).

Almost surely, 2^3977667794 is an apocalyptic number.

3977667794 is a deficient number, since it is larger than the sum of its proper divisors (2269517038).

3977667794 is a wasteful number, since it uses less digits than its factorization.

3977667794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295441.

The product of its digits is 84015792, while the sum is 65.

The square root of 3977667794 is about 63068.7544985629. The cubic root of 3977667794 is about 1584.4413564631.

Subtracting 3977667794 from its reverse (4977667793), we obtain a palindrome (999999999).

The spelling of 3977667794 in words is "three billion, nine hundred seventy-seven million, six hundred sixty-seven thousand, seven hundred ninety-four".