3964392 has 24 divisors (see below), whose sum is σ = 10737090. Its totient is φ = 1321440.

The previous prime is 3964381. The next prime is 3964393. The reversal of 3964392 is 2934693.

It is a happy number.

3964392 is a `hidden beast` number, since 3 + 9 + 643 + 9 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3437316 + 527076 = 1854^2 + 726^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a d-powerful number, because it can be written as 3⁷ + 9² + 6⁵ + 4⁹ + 3¹³ + 9³ + 2²¹ .

It is not an unprimeable number, because it can be changed into a prime (3964393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27459 + ... + 27602.

Almost surely, 2^3964392 is an apocalyptic number.

It is an amenable number.

3964392 is an abundant number, since it is smaller than the sum of its proper divisors (6772698).

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

3964392 is a wasteful number, since it uses less digits than its factorization.

3964392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55073 (or 55066 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 3964392 is about 1991.0780999248. The cubic root of 3964392 is about 158.2676657203.

It can be divided in two parts, 3964 and 392, that added together give a square (4356 = 66²).

The spelling of 3964392 in words is "three million, nine hundred sixty-four thousand, three hundred ninety-two".