3955009 has 2 divisors, whose sum is σ = 3955010. Its totient is φ = 3955008.

The previous prime is 3955001. The next prime is 3955013. The reversal of 3955009 is 9005593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3010225 + 944784 = 1735^2 + 972^2 .

It is a cyclic number.

It is not a de Polignac number, because 3955009 - 2³ = 3955001 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (3955001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1977504 + 1977505.

It is an arithmetic number, because the mean of its divisors is an integer number (1977505).

Almost surely, 2^3955009 is an apocalyptic number.

It is an amenable number.

3955009 is a deficient number, since it is larger than the sum of its proper divisors (1).

3955009 is an equidigital number, since it uses as much as digits as its factorization.

3955009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6075, while the sum is 31.

The square root of 3955009 is about 1988.7204428979. The cubic root of 3955009 is about 158.1427034187.

The spelling of 3955009 in words is "three million, nine hundred fifty-five thousand, nine".