6402149 has 16 divisors (see below), whose sum is σ = 7439040. Its totient is φ = 5456640.

The previous prime is 6402139. The next prime is 6402157. The reversal of 6402149 is 9412046.

It is a cyclic number.

It is not a de Polignac number, because 6402149 - 2⁸ = 6401893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6402139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12794 + ... + 13284.

It is an arithmetic number, because the mean of its divisors is an integer number (464940).

Almost surely, 2^6402149 is an apocalyptic number.

It is an amenable number.

6402149 is a deficient number, since it is larger than the sum of its proper divisors (1036891).

6402149 is a wasteful number, since it uses less digits than its factorization.

6402149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 6402149 is about 2530.2468259045. The cubic root of 6402149 is about 185.6843317990.

The spelling of 6402149 in words is "six million, four hundred two thousand, one hundred forty-nine".