3865137 has 8 divisors (see below), whose sum is σ = 5456736. Its totient is φ = 2425152.

The previous prime is 3865133. The next prime is 3865153. The reversal of 3865137 is 7315683.

It is a happy number.

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

It is not a de Polignac number, because 3865137 - 2² = 3865133 is a prime.

3865137 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3865098 and 3865107.

It is not an unprimeable number, because it can be changed into a prime (3865133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37843 + ... + 37944.

It is an arithmetic number, because the mean of its divisors is an integer number (682092).

Almost surely, 2^3865137 is an apocalyptic number.

It is an amenable number.

3865137 is a deficient number, since it is larger than the sum of its proper divisors (1591599).

3865137 is a wasteful number, since it uses less digits than its factorization.

3865137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75807.

The product of its digits is 15120, while the sum is 33.

The square root of 3865137 is about 1965.9951678476. The cubic root of 3865137 is about 156.9356572996.

The spelling of 3865137 in words is "three million, eight hundred sixty-five thousand, one hundred thirty-seven".