3279391642 has 16 divisors (see below), whose sum is σ = 5134148712. Its totient is φ = 1569518080.

The previous prime is 3279391639. The next prime is 3279391649. The reversal of 3279391642 is 2461939723.

It can be written as a sum of positive squares in 4 ways, for example, as 2073982681 + 1205408961 = 45541^2 + 34719^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3279391592 and 3279391601.

It is not an unprimeable number, because it can be changed into a prime (3279391649) 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, 372943 + ... + 381634.

Almost surely, 2^3279391642 is an apocalyptic number.

3279391642 is a deficient number, since it is larger than the sum of its proper divisors (1854757070).

3279391642 is a wasteful number, since it uses less digits than its factorization.

3279391642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754673.

The product of its digits is 489888, while the sum is 46.

The square root of 3279391642 is about 57265.9728110856. The cubic root of 3279391642 is about 1485.6999035335.

The spelling of 3279391642 in words is "three billion, two hundred seventy-nine million, three hundred ninety-one thousand, six hundred forty-two".