3964820 has 12 divisors (see below), whose sum is σ = 8326164. Its totient is φ = 1585920.

The previous prime is 3964819. The next prime is 3964837. The reversal of 3964820 is 284693.

It can be written as a sum of positive squares in 2 ways, for example, as 512656 + 3452164 = 716^2 + 1858^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99101 + ... + 99140.

It is an arithmetic number, because the mean of its divisors is an integer number (693847).

Almost surely, 2^3964820 is an apocalyptic number.

It is an amenable number.

3964820 is an abundant number, since it is smaller than the sum of its proper divisors (4361344).

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

3964820 is a wasteful number, since it uses less digits than its factorization.

3964820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198250 (or 198248 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 3964820 is about 1991.1855764845. The cubic root of 3964820 is about 158.2733610975.

The spelling of 3964820 in words is "three million, nine hundred sixty-four thousand, eight hundred twenty".