3978011 has 8 divisors (see below), whose sum is σ = 4369920. Its totient is φ = 3604392.

The previous prime is 3977999. The next prime is 3978031. The reversal of 3978011 is 1108793.

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 3978011 - 2⁶ = 3977947 is a prime.

It is a super-2 number, since 2×3978011² = 31649143032242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3978031) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4115 + ... + 4988.

It is an arithmetic number, because the mean of its divisors is an integer number (546240).

Almost surely, 2^3978011 is an apocalyptic number.

3978011 is a deficient number, since it is larger than the sum of its proper divisors (391909).

3978011 is a wasteful number, since it uses less digits than its factorization.

3978011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9145.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 3978011 is about 1994.4951742233. The cubic root of 3978011 is about 158.4486925389.

It can be divided in two parts, 39780 and 11, that multiplied together give a triangular number (437580 = T₉₃₅).

The spelling of 3978011 in words is "three million, nine hundred seventy-eight thousand, eleven".