3909801 has 32 divisors (see below), whose sum is σ = 6451200. Its totient is φ = 2056320.

The previous prime is 3909799. The next prime is 3909803. The reversal of 3909801 is 1089093.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3909799) and next prime (3909803).

It is not a de Polignac number, because 3909801 - 2¹ = 3909799 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3909803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16240 + ... + 16478.

It is an arithmetic number, because the mean of its divisors is an integer number (201600).

Almost surely, 2^3909801 is an apocalyptic number.

It is an amenable number.

3909801 is a deficient number, since it is larger than the sum of its proper divisors (2541399).

3909801 is a wasteful number, since it uses less digits than its factorization.

3909801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 3909801 is about 1977.3216733754. The cubic root of 3909801 is about 157.5378392329.

The spelling of 3909801 in words is "three million, nine hundred nine thousand, eight hundred one".