3955961 has 4 divisors (see below), whose sum is σ = 4000500. Its totient is φ = 3911424.

The previous prime is 3955949. The next prime is 3955969. The reversal of 3955961 is 1695593.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2119936 + 1836025 = 1456^2 + 1355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3955961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3955969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22136 + ... + 22313.

It is an arithmetic number, because the mean of its divisors is an integer number (1000125).

Almost surely, 2^3955961 is an apocalyptic number.

It is an amenable number.

3955961 is a deficient number, since it is larger than the sum of its proper divisors (44539).

3955961 is an equidigital number, since it uses as much as digits as its factorization.

3955961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44538.

The product of its digits is 36450, while the sum is 38.

The square root of 3955961 is about 1988.9597783766. The cubic root of 3955961 is about 158.1553911079.

The spelling of 3955961 in words is "three million, nine hundred fifty-five thousand, nine hundred sixty-one".