3965415 has 16 divisors (see below), whose sum is σ = 6386688. Its totient is φ = 2100896.

The previous prime is 3965393. The next prime is 3965419. The reversal of 3965415 is 5145693.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3965415 - 2⁵ = 3965383 is a prime.

It is a super-2 number, since 2×3965415² = 31449032244450, which contains 22 as substring.

3965415 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3965419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1714 + ... + 3296.

It is an arithmetic number, because the mean of its divisors is an integer number (399168).

Almost surely, 2^3965415 is an apocalyptic number.

3965415 is a deficient number, since it is larger than the sum of its proper divisors (2421273).

3965415 is a wasteful number, since it uses less digits than its factorization.

3965415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758.

The product of its digits is 16200, while the sum is 33.

The square root of 3965415 is about 1991.3349793543. The cubic root of 3965415 is about 158.2812780554.

The spelling of 3965415 in words is "three million, nine hundred sixty-five thousand, four hundred fifteen".