6399461 has 4 divisors (see below), whose sum is σ = 6462924. Its totient is φ = 6336000.

The previous prime is 6399457. The next prime is 6399467. The reversal of 6399461 is 1649936.

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 4884100 + 1515361 = 2210^2 + 1231^2 .

It is a cyclic number.

It is not a de Polignac number, because 6399461 - 2² = 6399457 is a prime.

It is a super-3 number, since 3×6399461³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6399467) 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, 31580 + ... + 31781.

It is an arithmetic number, because the mean of its divisors is an integer number (1615731).

Almost surely, 2^6399461 is an apocalyptic number.

It is an amenable number.

6399461 is a deficient number, since it is larger than the sum of its proper divisors (63463).

6399461 is a wasteful number, since it uses less digits than its factorization.

6399461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63462.

The product of its digits is 34992, while the sum is 38.

The square root of 6399461 is about 2529.7155966630. The cubic root of 6399461 is about 185.6583410807.

The spelling of 6399461 in words is "six million, three hundred ninety-nine thousand, four hundred sixty-one".