3978249532 has 12 divisors (see below), whose sum is σ = 6993157696. Its totient is φ = 1980204480.

The previous prime is 3978249503. The next prime is 3978249559. The reversal of 3978249532 is 2359428793.

It is a self number, because there is not a number n which added to its sum of digits gives 3978249532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2229069 + ... + 2230852.

Almost surely, 2^3978249532 is an apocalyptic number.

It is an amenable number.

3978249532 is a deficient number, since it is larger than the sum of its proper divisors (3014908164).

3978249532 is a wasteful number, since it uses less digits than its factorization.

3978249532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4460148 (or 4460146 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 52.

The square root of 3978249532 is about 63073.3662650092. The cubic root of 3978249532 is about 1584.5185947564.

The spelling of 3978249532 in words is "three billion, nine hundred seventy-eight million, two hundred forty-nine thousand, five hundred thirty-two".