3961901 has 6 divisors (see below), whose sum is σ = 4208970. Its totient is φ = 3728576.

The previous prime is 3961897. The next prime is 3961907. The reversal of 3961901 is 1091693.

It can be written as a sum of positive squares in 3 ways, for example, as 2399401 + 1562500 = 1549^2 + 1250^2 .

It is not a de Polignac number, because 3961901 - 2² = 3961897 is a prime.

It is a super-3 number, since 3×3961901³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3961907) 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, 6566 + ... + 7143.

It is an arithmetic number, because the mean of its divisors is an integer number (701495).

Almost surely, 2^3961901 is an apocalyptic number.

It is an amenable number.

3961901 is a deficient number, since it is larger than the sum of its proper divisors (247069).

3961901 is a wasteful number, since it uses less digits than its factorization.

3961901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13743 (or 13726 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 3961901 is about 1990.4524611254. The cubic root of 3961901 is about 158.2345099545.

The spelling of 3961901 in words is "three million, nine hundred sixty-one thousand, nine hundred one".