3964278 has 16 divisors (see below), whose sum is σ = 7948080. Its totient is φ = 1318176.

The previous prime is 3964277. The next prime is 3964283. The reversal of 3964278 is 8724693.

It is a super-2 number, since 2×3964278² = 31431000122568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3964273) 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, 4368 + ... + 5196.

It is an arithmetic number, because the mean of its divisors is an integer number (496755).

Almost surely, 2^3964278 is an apocalyptic number.

3964278 is an abundant number, since it is smaller than the sum of its proper divisors (3983802).

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

3964278 is a wasteful number, since it uses less digits than its factorization.

3964278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631.

The product of its digits is 72576, while the sum is 39.

The square root of 3964278 is about 1991.0494720122. The cubic root of 3964278 is about 158.2661486581.

The spelling of 3964278 in words is "three million, nine hundred sixty-four thousand, two hundred seventy-eight".