3915975 has 24 divisors (see below), whose sum is σ = 7400320. Its totient is φ = 1789920.

The previous prime is 3915971. The next prime is 3915979. The reversal of 3915975 is 5795193.

3915975 = 110² + 111² + ... + 235².

It is an interprime number because it is at equal distance from previous prime (3915971) and next prime (3915979).

It is not a de Polignac number, because 3915975 - 2² = 3915971 is a prime.

3915975 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3915971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3205 + ... + 4254.

Almost surely, 2^3915975 is an apocalyptic number.

3915975 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3915975 is a deficient number, since it is larger than the sum of its proper divisors (3484345).

3915975 is a wasteful number, since it uses less digits than its factorization.

3915975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7479 (or 7474 counting only the distinct ones).

The product of its digits is 42525, while the sum is 39.

The square root of 3915975 is about 1978.8822602671. The cubic root of 3915975 is about 157.6207187368.

The spelling of 3915975 in words is "three million, nine hundred fifteen thousand, nine hundred seventy-five".