3977792285 has 4 divisors (see below), whose sum is σ = 4773350748. Its totient is φ = 3182233824.

The previous prime is 3977792281. The next prime is 3977792309. The reversal of 3977792285 is 5822977793.

3977792285 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5822977793 = 233 ⋅24991321.

It can be written as a sum of positive squares in 2 ways, for example, as 1304798884 + 2672993401 = 36122^2 + 51701^2 .

It is a cyclic number.

It is not a de Polignac number, because 3977792285 - 2² = 3977792281 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3977792281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397779224 + ... + 397779233.

It is an arithmetic number, because the mean of its divisors is an integer number (1193337687).

Almost surely, 2^3977792285 is an apocalyptic number.

It is an amenable number.

3977792285 is a deficient number, since it is larger than the sum of its proper divisors (795558463).

3977792285 is an equidigital number, since it uses as much as digits as its factorization.

3977792285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795558462.

The product of its digits is 13335840, while the sum is 59.

The square root of 3977792285 is about 63069.7414375547. The cubic root of 3977792285 is about 1584.4578859674.

The spelling of 3977792285 in words is "three billion, nine hundred seventy-seven million, seven hundred ninety-two thousand, two hundred eighty-five".