29339820869 has 4 divisors (see below), whose sum is σ = 30351538860. Its totient is φ = 28328102880.

The previous prime is 29339820857. The next prime is 29339820883. The reversal of 29339820869 is 96802893392.

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 24191758369 + 5148062500 = 155537^2 + 71750^2 .

It is a cyclic number.

It is not a de Polignac number, because 29339820869 - 2¹² = 29339816773 is a prime.

It is a super-2 number, since 2×29339820869² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29339820269) 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, 505858952 + ... + 505859009.

It is an arithmetic number, because the mean of its divisors is an integer number (7587884715).

Almost surely, 2^29339820869 is an apocalyptic number.

29339820869 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

29339820869 is a deficient number, since it is larger than the sum of its proper divisors (1011717991).

29339820869 is a wasteful number, since it uses less digits than its factorization.

29339820869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011717990.

The product of its (nonzero) digits is 10077696, while the sum is 59.

The spelling of 29339820869 in words is "twenty-nine billion, three hundred thirty-nine million, eight hundred twenty thousand, eight hundred sixty-nine".