6446401534 has 8 divisors (see below), whose sum is σ = 9672088968. Its totient is φ = 3222371880.

The previous prime is 6446401531. The next prime is 6446401541. The reversal of 6446401534 is 4351046446.

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

It is a junction number, because it is equal to n+sod(n) for n = 6446401493 and 6446401502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6446401531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404677 + ... + 420304.

It is an arithmetic number, because the mean of its divisors is an integer number (1209011121).

Almost surely, 2^6446401534 is an apocalyptic number.

6446401534 is a deficient number, since it is larger than the sum of its proper divisors (3225687434).

6446401534 is a wasteful number, since it uses less digits than its factorization.

6446401534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828890.

The product of its (nonzero) digits is 138240, while the sum is 37.

The square root of 6446401534 is about 80289.4858247330. The cubic root of 6446401534 is about 1861.1117504728. Note that the first 3 decimals are identical.

The spelling of 6446401534 in words is "six billion, four hundred forty-six million, four hundred one thousand, five hundred thirty-four".