3964429 has 4 divisors (see below), whose sum is σ = 4530784. Its totient is φ = 3398076.

The previous prime is 3964423. The next prime is 3964463. The reversal of 3964429 is 9244693.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9244693 = 107 ⋅86399.

It is a cyclic number.

It is not a de Polignac number, because 3964429 - 2³ = 3964421 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3964421) 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 3 ways as a sum of consecutive naturals, for example, 283167 + ... + 283180.

It is an arithmetic number, because the mean of its divisors is an integer number (1132696).

Almost surely, 2^3964429 is an apocalyptic number.

It is an amenable number.

3964429 is a deficient number, since it is larger than the sum of its proper divisors (566355).

3964429 is an equidigital number, since it uses as much as digits as its factorization.

3964429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566354.

The product of its digits is 46656, while the sum is 37.

The square root of 3964429 is about 1991.0873913518. The cubic root of 3964429 is about 158.2681580938.

The spelling of 3964429 in words is "three million, nine hundred sixty-four thousand, four hundred twenty-nine".