3865429 has 2 divisors, whose sum is σ = 3865430. Its totient is φ = 3865428.

The previous prime is 3865363. The next prime is 3865447. The reversal of 3865429 is 9245683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3713329 + 152100 = 1927^2 + 390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3865429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3865469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1932714 + 1932715.

It is an arithmetic number, because the mean of its divisors is an integer number (1932715).

Almost surely, 2^3865429 is an apocalyptic number.

It is an amenable number.

3865429 is a deficient number, since it is larger than the sum of its proper divisors (1).

3865429 is an equidigital number, since it uses as much as digits as its factorization.

3865429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 3865429 is about 1966.0694290894. The cubic root of 3865429 is about 156.9396092128.

It can be divided in two parts, 38654 and 29, that added together give a palindrome (38683).

The spelling of 3865429 in words is "three million, eight hundred sixty-five thousand, four hundred twenty-nine".