3949133365 has 12 divisors (see below), whose sum is σ = 4792853124. Its totient is φ = 3123777536.

The previous prime is 3949133359. The next prime is 3949133393. The reversal of 3949133365 is 5633319493.

It can be written as a sum of positive squares in 6 ways, for example, as 1140345361 + 2808788004 = 33769^2 + 52998^2 .

It is not a de Polignac number, because 3949133365 - 2⁵ = 3949133333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10252 + ... + 89461.

It is an arithmetic number, because the mean of its divisors is an integer number (399404427).

Almost surely, 2^3949133365 is an apocalyptic number.

It is an amenable number.

3949133365 is a deficient number, since it is larger than the sum of its proper divisors (843719759).

3949133365 is an frugal number, since it uses more digits than its factorization.

3949133365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99896 (or 99807 counting only the distinct ones).

The product of its digits is 787320, while the sum is 46.

The square root of 3949133365 is about 62842.1304938017. The cubic root of 3949133365 is about 1580.6435135733.

It can be divided in two parts, 394913 and 3365, that added together give a triangular number (398278 = T₈₉₂).

The spelling of 3949133365 in words is "three billion, nine hundred forty-nine million, one hundred thirty-three thousand, three hundred sixty-five".