3965990531 has 4 divisors (see below), whose sum is σ = 3967187352. Its totient is φ = 3964793712.

The previous prime is 3965990527. The next prime is 3965990543. The reversal of 3965990531 is 1350995693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1350995693 = 9851 ⋅137143.

It is a cyclic number.

It is not a de Polignac number, because 3965990531 - 2² = 3965990527 is a prime.

It is a super-2 number, since 2×3965990531² = 31458161783963323922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3965990531.

It is not an unprimeable number, because it can be changed into a prime (3965990591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 593426 + ... + 600071.

It is an arithmetic number, because the mean of its divisors is an integer number (991796838).

Almost surely, 2^3965990531 is an apocalyptic number.

3965990531 is a deficient number, since it is larger than the sum of its proper divisors (1196821).

3965990531 is a wasteful number, since it uses less digits than its factorization.

3965990531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196820.

The product of its (nonzero) digits is 984150, while the sum is 50.

The square root of 3965990531 is about 62976.1107960789. The cubic root of 3965990531 is about 1582.8893520902.

The spelling of 3965990531 in words is "three billion, nine hundred sixty-five million, nine hundred ninety thousand, five hundred thirty-one".