3960796421 has 4 divisors (see below), whose sum is σ = 3983691372. Its totient is φ = 3937901472.

The previous prime is 3960796403. The next prime is 3960796457. The reversal of 3960796421 is 1246970693.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1246970693 = 2677 ⋅465809.

It can be written as a sum of positive squares in 2 ways, for example, as 3258811396 + 701985025 = 57086^2 + 26495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3960796421 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 (3960796621) 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, 11447216 + ... + 11447561.

It is an arithmetic number, because the mean of its divisors is an integer number (995922843).

Almost surely, 2^3960796421 is an apocalyptic number.

It is an amenable number.

3960796421 is a deficient number, since it is larger than the sum of its proper divisors (22894951).

3960796421 is a wasteful number, since it uses less digits than its factorization.

3960796421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22894950.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 3960796421 is about 62934.8585523158. The cubic root of 3960796421 is about 1582.1980331388.

The spelling of 3960796421 in words is "three billion, nine hundred sixty million, seven hundred ninety-six thousand, four hundred twenty-one".