3835921 has 2 divisors, whose sum is σ = 3835922. Its totient is φ = 3835920.

The previous prime is 3835913. The next prime is 3835927. The reversal of 3835921 is 1295383.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3294225 + 541696 = 1815^2 + 736^2 .

It is a cyclic number.

It is not a de Polignac number, because 3835921 - 2³ = 3835913 is a prime.

It is not a weakly prime, because it can be changed into another prime (3835927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1917960 + 1917961.

It is an arithmetic number, because the mean of its divisors is an integer number (1917961).

Almost surely, 2^3835921 is an apocalyptic number.

It is an amenable number.

3835921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3835921 is an equidigital number, since it uses as much as digits as its factorization.

3835921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 31.

The square root of 3835921 is about 1958.5507397053. The cubic root of 3835921 is about 156.5392389709.

The spelling of 3835921 in words is "three million, eight hundred thirty-five thousand, nine hundred twenty-one".