6402849 has 4 divisors (see below), whose sum is σ = 8537136. Its totient is φ = 4268564.

The previous prime is 6402841. The next prime is 6402859. The reversal of 6402849 is 9482046.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6402849 - 2³ = 6402841 is a prime.

It is a D-number.

It is a Curzon number.

6402849 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6402841) 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, 1067139 + ... + 1067144.

It is an arithmetic number, because the mean of its divisors is an integer number (2134284).

Almost surely, 2^6402849 is an apocalyptic number.

It is an amenable number.

6402849 is a deficient number, since it is larger than the sum of its proper divisors (2134287).

6402849 is a wasteful number, since it uses less digits than its factorization.

6402849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134286.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 6402849 is about 2530.3851485495. The cubic root of 6402849 is about 185.6910990213.

The spelling of 6402849 in words is "six million, four hundred two thousand, eight hundred forty-nine".