3977776 has 40 divisors (see below), whose sum is σ = 8530704. Its totient is φ = 1781760.

The previous prime is 3977761. The next prime is 3977777. The reversal of 3977776 is 6777793.

Its product of digits (388962) is a multiple of the sum of its prime divisors (343).

It is not an unprimeable number, because it can be changed into a prime (3977777) 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, 16956 + ... + 17188.

Almost surely, 2^3977776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3977776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4265352).

3977776 is an abundant number, since it is smaller than the sum of its proper divisors (4552928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3977776 is a wasteful number, since it uses less digits than its factorization.

3977776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 343 counting only the distinct ones).

The product of its digits is 388962, while the sum is 46.

The square root of 3977776 is about 1994.4362612026. The cubic root of 3977776 is about 158.4455723718.

It can be divided in two parts, 3977 and 776, that added together give a triangular number (4753 = T₉₇).

The spelling of 3977776 in words is "three million, nine hundred seventy-seven thousand, seven hundred seventy-six".