3990461 has 4 divisors (see below), whose sum is σ = 4225212. Its totient is φ = 3755712.

The previous prime is 3990451. The next prime is 3990463. The reversal of 3990461 is 1640993.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3587236 + 403225 = 1894^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 3990461 - 2¹⁰ = 3989437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117350 + ... + 117383.

It is an arithmetic number, because the mean of its divisors is an integer number (1056303).

Almost surely, 2^3990461 is an apocalyptic number.

It is an amenable number.

3990461 is a deficient number, since it is larger than the sum of its proper divisors (234751).

3990461 is a wasteful number, since it uses less digits than its factorization.

3990461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234750.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 3990461 is about 1997.6138265441. The cubic root of 3990461 is about 158.6138196017.

The spelling of 3990461 in words is "three million, nine hundred ninety thousand, four hundred sixty-one".