3866437 has 2 divisors, whose sum is σ = 3866438. Its totient is φ = 3866436.

The previous prime is 3866419. The next prime is 3866441. The reversal of 3866437 is 7346683.

It is a happy number.

3866437 is nontrivially palindromic in base 12.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3568321 + 298116 = 1889^2 + 546^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3866437 is a prime.

It is a d-powerful number, because it can be written as 3⁶ + 8⁷ + 6² + 6⁸ + 4⁸ + 3⁸ + 7⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 3866396 and 3866405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3866237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1933218 + 1933219.

It is an arithmetic number, because the mean of its divisors is an integer number (1933219).

Almost surely, 2^3866437 is an apocalyptic number.

It is an amenable number.

3866437 is a deficient number, since it is larger than the sum of its proper divisors (1).

3866437 is an equidigital number, since it uses as much as digits as its factorization.

3866437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 37.

The square root of 3866437 is about 1966.3257614139. The cubic root of 3866437 is about 156.9532499046.

The spelling of 3866437 in words is "three million, eight hundred sixty-six thousand, four hundred thirty-seven".