3917285 has 8 divisors (see below), whose sum is σ = 4747896. Its totient is φ = 3102400.

The previous prime is 3917281. The next prime is 3917297. The reversal of 3917285 is 5827193.

It can be written as a sum of positive squares in 4 ways, for example, as 1976836 + 1940449 = 1406^2 + 1393^2 .

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

It is not a de Polignac number, because 3917285 - 2² = 3917281 is a prime.

It is a super-3 number, since 3×3917285³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3917281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3374 + ... + 4383.

It is an arithmetic number, because the mean of its divisors is an integer number (593487).

Almost surely, 2^3917285 is an apocalyptic number.

It is an amenable number.

3917285 is a deficient number, since it is larger than the sum of its proper divisors (830611).

3917285 is a wasteful number, since it uses less digits than its factorization.

3917285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7863.

The product of its digits is 15120, while the sum is 35.

The square root of 3917285 is about 1979.2132275225. The cubic root of 3917285 is about 157.6382929144.

The spelling of 3917285 in words is "three million, nine hundred seventeen thousand, two hundred eighty-five".