3978763 has 8 divisors (see below), whose sum is σ = 4154976. Its totient is φ = 3806400.

The previous prime is 3978761. The next prime is 3978773. The reversal of 3978763 is 3678793.

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 3978763 - 2¹ = 3978761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3978761) 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, 1258 + ... + 3088.

It is an arithmetic number, because the mean of its divisors is an integer number (519372).

Almost surely, 2^3978763 is an apocalyptic number.

3978763 is a deficient number, since it is larger than the sum of its proper divisors (176213).

3978763 is a wasteful number, since it uses less digits than its factorization.

3978763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925.

The product of its digits is 190512, while the sum is 43.

The square root of 3978763 is about 1994.6836841966. The cubic root of 3978763 is about 158.4586762476.

The spelling of 3978763 in words is "three million, nine hundred seventy-eight thousand, seven hundred sixty-three".