3961970 has 8 divisors (see below), whose sum is σ = 7131564. Its totient is φ = 1584784.

The previous prime is 3961967. The next prime is 3961973. The reversal of 3961970 is 791693.

It is an interprime number because it is at equal distance from previous prime (3961967) and next prime (3961973).

It can be written as a sum of positive squares in 2 ways, for example, as 3418801 + 543169 = 1849^2 + 737^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3961970.

It is not an unprimeable number, because it can be changed into a prime (3961973) 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, 198089 + ... + 198108.

Almost surely, 2^3961970 is an apocalyptic number.

3961970 is a deficient number, since it is larger than the sum of its proper divisors (3169594).

3961970 is a wasteful number, since it uses less digits than its factorization.

3961970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396204.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 3961970 is about 1990.4697937924. The cubic root of 3961970 is about 158.2354285470.

The spelling of 3961970 in words is "three million, nine hundred sixty-one thousand, nine hundred seventy".