3961620480 has 96 divisors (see below), whose sum is σ = 12674188800. Its totient is φ = 1056423936.

The previous prime is 3961620473. The next prime is 3961620491. The reversal of 3961620480 is 840261693.

It is a tau number, because it is divible by the number of its divisors (96).

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, 33760 + ... + 95199.

It is an arithmetic number, because the mean of its divisors is an integer number (132022800).

Almost surely, 2^3961620480 is an apocalyptic number.

3961620480 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3961620480 is an abundant number, since it is smaller than the sum of its proper divisors (8712568320).

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

3961620480 is a wasteful number, since it uses less digits than its factorization.

3961620480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128989 (or 128969 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 3961620480 is about 62941.4051320750. The cubic root of 3961620480 is about 1582.3077530014.

The spelling of 3961620480 in words is "three billion, nine hundred sixty-one million, six hundred twenty thousand, four hundred eighty".