6403929489473 has 4 divisors (see below), whose sum is σ = 6422932247940. Its totient is φ = 6384926731008.

The previous prime is 6403929489401. The next prime is 6403929489533. The reversal of 6403929489473 is 3749849293046.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1909559169424 + 4494370320049 = 1381868^2 + 2119993^2 .

It is a cyclic number.

It is not a de Polignac number, because 6403929489473 - 2³⁴ = 6386749620289 is a prime.

It is a super-2 number, since 2×6403929489473² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6403929489073) 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, 9501378728 + ... + 9501379401.

It is an arithmetic number, because the mean of its divisors is an integer number (1605733061985).

Almost surely, 2^{6403929489473} is an apocalyptic number.

It is an amenable number.

6403929489473 is a deficient number, since it is larger than the sum of its proper divisors (19002758467).

6403929489473 is a wasteful number, since it uses less digits than its factorization.

6403929489473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19002758466.

The product of its (nonzero) digits is 282175488, while the sum is 68.

The spelling of 6403929489473 in words is "six trillion, four hundred three billion, nine hundred twenty-nine million, four hundred eighty-nine thousand, four hundred seventy-three".