3978633 has 16 divisors (see below), whose sum is σ = 5529600. Its totient is φ = 2541840.

The previous prime is 3978593. The next prime is 3978641. The reversal of 3978633 is 3368793.

It is not a de Polignac number, because 3978633 - 2¹³ = 3970441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3978591 and 3978600.

It is not an unprimeable number, because it can be changed into a prime (3978643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16528 + ... + 16766.

It is an arithmetic number, because the mean of its divisors is an integer number (345600).

Almost surely, 2^3978633 is an apocalyptic number.

It is an amenable number.

3978633 is a deficient number, since it is larger than the sum of its proper divisors (1550967).

3978633 is a wasteful number, since it uses less digits than its factorization.

3978633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452.

The product of its digits is 81648, while the sum is 39.

The square root of 3978633 is about 1994.6510973100. The cubic root of 3978633 is about 158.4569504304.

The spelling of 3978633 in words is "three million, nine hundred seventy-eight thousand, six hundred thirty-three".