6439698001 has 4 divisors (see below), whose sum is σ = 7025125104. Its totient is φ = 5854270900.

The previous prime is 6439697989. The next prime is 6439698053. The reversal of 6439698001 is 1008969346.

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 6439698001 - 2⁵ = 6439697969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6439698071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292713535 + ... + 292713556.

It is an arithmetic number, because the mean of its divisors is an integer number (1756281276).

Almost surely, 2^6439698001 is an apocalyptic number.

It is an amenable number.

6439698001 is a deficient number, since it is larger than the sum of its proper divisors (585427103).

6439698001 is a wasteful number, since it uses less digits than its factorization.

6439698001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585427102.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 6439698001 is about 80247.7289460580. The cubic root of 6439698001 is about 1860.4664110523.

The spelling of 6439698001 in words is "six billion, four hundred thirty-nine million, six hundred ninety-eight thousand, one".