6401969 has 8 divisors (see below), whose sum is σ = 7487040. Its totient is φ = 5359536.

The previous prime is 6401963. The next prime is 6401971. The reversal of 6401969 is 9691046.

6401969 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6401969 - 2⁸ = 6401713 is a prime.

It is a super-2 number, since 2×6401969² = 81970414153922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6401963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10334 + ... + 10935.

It is an arithmetic number, because the mean of its divisors is an integer number (935880).

Almost surely, 2^6401969 is an apocalyptic number.

It is an amenable number.

6401969 is a deficient number, since it is larger than the sum of its proper divisors (1085071).

6401969 is a wasteful number, since it uses less digits than its factorization.

6401969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21319.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 6401969 is about 2530.2112560022. The cubic root of 6401969 is about 185.6825915764.

The spelling of 6401969 in words is "six million, four hundred one thousand, nine hundred sixty-nine".