3950821141 has 4 divisors (see below), whose sum is σ = 3989938284. Its totient is φ = 3911704000.

The previous prime is 3950821079. The next prime is 3950821151. The reversal of 3950821141 is 1411280593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1411280593 = 7699 ⋅183307.

It can be written as a sum of positive squares in 2 ways, for example, as 2609064241 + 1341756900 = 51079^2 + 36630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3950821141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3950821097 and 3950821106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3950821151) 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, 19558420 + ... + 19558621.

It is an arithmetic number, because the mean of its divisors is an integer number (997484571).

Almost surely, 2^3950821141 is an apocalyptic number.

It is an amenable number.

3950821141 is a deficient number, since it is larger than the sum of its proper divisors (39117143).

3950821141 is a wasteful number, since it uses less digits than its factorization.

3950821141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39117142.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 3950821141 is about 62855.5577574489. The cubic root of 3950821141 is about 1580.8686593611.

The spelling of 3950821141 in words is "three billion, nine hundred fifty million, eight hundred twenty-one thousand, one hundred forty-one".