3978777 has 8 divisors (see below), whose sum is σ = 5787360. Its totient is φ = 2411360.

The previous prime is 3978773. The next prime is 3978781. The reversal of 3978777 is 7778793.

It is an interprime number because it is at equal distance from previous prime (3978773) and next prime (3978781).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3978777 - 2² = 3978773 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3978773) 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, 60252 + ... + 60317.

It is an arithmetic number, because the mean of its divisors is an integer number (723420).

Almost surely, 2^3978777 is an apocalyptic number.

It is an amenable number.

3978777 is a deficient number, since it is larger than the sum of its proper divisors (1808583).

3978777 is a wasteful number, since it uses less digits than its factorization.

3978777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120583.

The product of its digits is 518616, while the sum is 48.

The square root of 3978777 is about 1994.6871935218. The cubic root of 3978777 is about 158.4588621026.

The spelling of 3978777 in words is "three million, nine hundred seventy-eight thousand, seven hundred seventy-seven".