3961421370 has 64 divisors (see below), whose sum is σ = 10569744000. Its totient is φ = 1055783808.

The previous prime is 3961421351. The next prime is 3961421377. The reversal of 3961421370 is 731241693.

3961421370 is a `hidden beast` number, since 3 + 9 + 614 + 2 + 1 + 37 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (3961421377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 693486 + ... + 699174.

It is an arithmetic number, because the mean of its divisors is an integer number (165152250).

Almost surely, 2^3961421370 is an apocalyptic number.

3961421370 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3961421370 is an abundant number, since it is smaller than the sum of its proper divisors (6608322630).

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

3961421370 is a wasteful number, since it uses less digits than its factorization.

3961421370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8284 (or 8278 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 3961421370 is about 62939.8234029934. The cubic root of 3961421370 is about 1582.2812437672.

The spelling of 3961421370 in words is "three billion, nine hundred sixty-one million, four hundred twenty-one thousand, three hundred seventy".