3977955 has 24 divisors (see below), whose sum is σ = 6966960. Its totient is φ = 2099520.

The previous prime is 3977947. The next prime is 3977977. The reversal of 3977955 is 5597793.

It is a happy number.

It is not a de Polignac number, because 3977955 - 2³ = 3977947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 3977955.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4500 + ... + 5310.

It is an arithmetic number, because the mean of its divisors is an integer number (290290).

Almost surely, 2^3977955 is an apocalyptic number.

3977955 is a deficient number, since it is larger than the sum of its proper divisors (2989005).

3977955 is a wasteful number, since it uses less digits than its factorization.

3977955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931 (or 928 counting only the distinct ones).

The product of its digits is 297675, while the sum is 45.

The square root of 3977955 is about 1994.4811355338. The cubic root of 3977955 is about 158.4479490208.

The spelling of 3977955 in words is "three million, nine hundred seventy-seven thousand, nine hundred fifty-five".