3965428709 has 16 divisors (see below), whose sum is σ = 4482241920. Its totient is φ = 3475066560.

The previous prime is 3965428697. The next prime is 3965428757. The reversal of 3965428709 is 9078245693.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3965428709 - 2²⁸ = 3696993253 is a prime.

It is a super-2 number, since 2×3965428709² = 31449249692322813362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3965428609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196787 + ... + 215999.

It is an arithmetic number, because the mean of its divisors is an integer number (280140120).

Almost surely, 2^3965428709 is an apocalyptic number.

It is an amenable number.

3965428709 is a deficient number, since it is larger than the sum of its proper divisors (516813211).

3965428709 is a wasteful number, since it uses less digits than its factorization.

3965428709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19900.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The square root of 3965428709 is about 62971.6500419038. The cubic root of 3965428709 is about 1582.8146045543.

The spelling of 3965428709 in words is "three billion, nine hundred sixty-five million, four hundred twenty-eight thousand, seven hundred nine".