479139697097 has 4 divisors (see below), whose sum is σ = 483883654596. Its totient is φ = 474395739600.

The previous prime is 479139697039. The next prime is 479139697117. The reversal of 479139697097 is 790796931974.

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 291798753856 + 187340943241 = 540184^2 + 432829^2 .

It is a cyclic number.

It is not a de Polignac number, because 479139697097 - 2²⁴ = 479122919881 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 479139697097.

It is not an unprimeable number, because it can be changed into a prime (479139697297) 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, 2371978598 + ... + 2371978799.

It is an arithmetic number, because the mean of its divisors is an integer number (120970913649).

Almost surely, 2^479139697097 is an apocalyptic number.

It is an amenable number.

479139697097 is a deficient number, since it is larger than the sum of its proper divisors (4743957499).

479139697097 is a wasteful number, since it uses less digits than its factorization.

479139697097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4743957498.

The product of its (nonzero) digits is 162030456, while the sum is 71.

The spelling of 479139697097 in words is "four hundred seventy-nine billion, one hundred thirty-nine million, six hundred ninety-seven thousand, ninety-seven".