3978650434 has 16 divisors (see below), whose sum is σ = 6511928256. Its totient is φ = 1808086000.

The previous prime is 3978650413. The next prime is 3978650461. The reversal of 3978650434 is 4340568793.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100824 + ... + 134620.

It is an arithmetic number, because the mean of its divisors is an integer number (406995516).

Almost surely, 2^3978650434 is an apocalyptic number.

3978650434 is a deficient number, since it is larger than the sum of its proper divisors (2533277822).

3978650434 is a wasteful number, since it uses less digits than its factorization.

3978650434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39161.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The square root of 3978650434 is about 63076.5442458605. The cubic root of 3978650434 is about 1584.5718187796.

The spelling of 3978650434 in words is "three billion, nine hundred seventy-eight million, six hundred fifty thousand, four hundred thirty-four".