3953669850 has 72 divisors (see below), whose sum is σ = 11439301692. Its totient is φ = 973209600.

The previous prime is 3953669833. The next prime is 3953669857. The reversal of 3953669850 is 589663593.

It can be written as a sum of positive squares in 6 ways, for example, as 491641929 + 3462027921 = 22173^2 + 58839^2 .

It is not an unprimeable number, because it can be changed into a prime (3953669857) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 332071 + ... + 343770.

Almost surely, 2^3953669850 is an apocalyptic number.

3953669850 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3953669850 is an abundant number, since it is smaller than the sum of its proper divisors (7485631842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3953669850 is a wasteful number, since it uses less digits than its factorization.

3953669850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675872 (or 675864 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 54.

The square root of 3953669850 is about 62878.2144307549. The cubic root of 3953669850 is about 1581.2485257789.

The spelling of 3953669850 in words is "three billion, nine hundred fifty-three million, six hundred sixty-nine thousand, eight hundred fifty".