3956743285 has 16 divisors (see below), whose sum is σ = 5484428352. Its totient is φ = 2708358400.

The previous prime is 3956743283. The next prime is 3956743303. The reversal of 3956743285 is 5823476593.

It is not a de Polignac number, because 3956743285 - 2¹ = 3956743283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3956743283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2114971 + ... + 2116840.

It is an arithmetic number, because the mean of its divisors is an integer number (342776772).

Almost surely, 2^3956743285 is an apocalyptic number.

It is an amenable number.

3956743285 is a deficient number, since it is larger than the sum of its proper divisors (1527685067).

3956743285 is a wasteful number, since it uses less digits than its factorization.

3956743285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4231844.

The product of its digits is 5443200, while the sum is 52.

The square root of 3956743285 is about 62902.6492685324. The cubic root of 3956743285 is about 1581.6581541325.

The spelling of 3956743285 in words is "three billion, nine hundred fifty-six million, seven hundred forty-three thousand, two hundred eighty-five".