634488039469 has 2 divisors, whose sum is σ = 634488039470. Its totient is φ = 634488039468.

The previous prime is 634488039461. The next prime is 634488039547. The reversal of 634488039469 is 964930884436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 571467962025 + 63020077444 = 755955^2 + 251038^2 .

It is a cyclic number.

It is not a de Polignac number, because 634488039469 - 2³ = 634488039461 is a prime.

It is a super-3 number, since 3×634488039469³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 634488039469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634488039461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317244019734 + 317244019735.

It is an arithmetic number, because the mean of its divisors is an integer number (317244019735).

Almost surely, 2^634488039469 is an apocalyptic number.

It is an amenable number.

634488039469 is a deficient number, since it is larger than the sum of its proper divisors (1).

634488039469 is an equidigital number, since it uses as much as digits as its factorization.

634488039469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107495424, while the sum is 64.

The spelling of 634488039469 in words is "six hundred thirty-four billion, four hundred eighty-eight million, thirty-nine thousand, four hundred sixty-nine".