3904133978 has 8 divisors (see below), whose sum is σ = 5864557140. Its totient is φ = 1949281600.

The previous prime is 3904133977. The next prime is 3904133993. The reversal of 3904133978 is 8793314093.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3902126089 + 2007889 = 62467^2 + 1417^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (3904133971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1390943 + ... + 1393746.

Almost surely, 2^3904133978 is an apocalyptic number.

3904133978 is a deficient number, since it is larger than the sum of its proper divisors (1960423162).

3904133978 is a wasteful number, since it uses less digits than its factorization.

3904133978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785392.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 3904133978 is about 62483.0695308737. The cubic root of 3904133978 is about 1574.6168854672.

The spelling of 3904133978 in words is "three billion, nine hundred four million, one hundred thirty-three thousand, nine hundred seventy-eight".