3961001400959 has 6 divisors (see below), whose sum is σ = 3996364728096. Its totient is φ = 3925948278560.

The previous prime is 3961001400949. The next prime is 3961001400977. The reversal of 3961001400959 is 9590041001693.

It is a happy number.

It is not a de Polignac number, because 3961001400959 - 2⁸ = 3961001400703 is a prime.

It is a super-2 number, since 2×3961001400959² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3961001400949) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155089487 + ... + 155115024.

It is an arithmetic number, because the mean of its divisors is an integer number (666060788016).

Almost surely, 2^{3961001400959} is an apocalyptic number.

3961001400959 is a deficient number, since it is larger than the sum of its proper divisors (35363327137).

3961001400959 is an equidigital number, since it uses as much as digits as its factorization.

3961001400959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310204737 (or 310204624 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 47.

The spelling of 3961001400959 in words is "three trillion, nine hundred sixty-one billion, one million, four hundred thousand, nine hundred fifty-nine".