3961429040 has 20 divisors (see below), whose sum is σ = 9210322704. Its totient is φ = 1584571584.

The previous prime is 3961429037. The next prime is 3961429057. The reversal of 3961429040 is 409241693.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 3961428985 and 3961429003.

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, 24758852 + ... + 24759011.

Almost surely, 2^3961429040 is an apocalyptic number.

It is an amenable number.

3961429040 is an abundant number, since it is smaller than the sum of its proper divisors (5248893664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3961429040 is a wasteful number, since it uses less digits than its factorization.

3961429040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49517876 (or 49517870 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 3961429040 is about 62939.8843341803. The cubic root of 3961429040 is about 1582.2822649570.

The spelling of 3961429040 in words is "three billion, nine hundred sixty-one million, four hundred twenty-nine thousand, forty".