3949821514 has 16 divisors (see below), whose sum is σ = 6275191176. Its totient is φ = 1858163200.

The previous prime is 3949821511. The next prime is 3949821527. The reversal of 3949821514 is 4151289493.

It can be written as a sum of positive squares in 4 ways, for example, as 3686311225 + 263510289 = 60715^2 + 16233^2 .

It is not an unprimeable number, because it can be changed into a prime (3949821511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105534 + ... + 137974.

Almost surely, 2^3949821514 is an apocalyptic number.

3949821514 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

3949821514 is a deficient number, since it is larger than the sum of its proper divisors (2325369662).

3949821514 is a wasteful number, since it uses less digits than its factorization.

3949821514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36041.

The product of its digits is 311040, while the sum is 46.

The square root of 3949821514 is about 62847.6054754674. The cubic root of 3949821514 is about 1580.7353189544.

The spelling of 3949821514 in words is "three billion, nine hundred forty-nine million, eight hundred twenty-one thousand, five hundred fourteen".