3950217 has 6 divisors (see below), whose sum is σ = 5705882. Its totient is φ = 2633472.

The previous prime is 3950213. The next prime is 3950257. The reversal of 3950217 is 7120593.

It can be written as a sum of positive squares in only one way, i.e., 2595321 + 1354896 = 1611^2 + 1164^2 .

It is not a de Polignac number, because 3950217 - 2² = 3950213 is a prime.

It is a Duffinian number.

3950217 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3950213) 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, 219448 + ... + 219465.

Almost surely, 2^3950217 is an apocalyptic number.

It is an amenable number.

3950217 is a deficient number, since it is larger than the sum of its proper divisors (1755665).

3950217 is a wasteful number, since it uses less digits than its factorization.

3950217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438919 (or 438916 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 3950217 is about 1987.5152829601. The cubic root of 3950217 is about 158.0788075585.

The spelling of 3950217 in words is "three million, nine hundred fifty thousand, two hundred seventeen".