29864699869 has 2 divisors, whose sum is σ = 29864699870. Its totient is φ = 29864699868.

The previous prime is 29864699849. The next prime is 29864699903. The reversal of 29864699869 is 96899646892.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22166743225 + 7697956644 = 148885^2 + 87738^2 .

It is a cyclic number.

It is not a de Polignac number, because 29864699869 - 2¹³ = 29864691677 is a prime.

It is a super-2 number, since 2×29864699869² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 29864699795 and 29864699804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29864699849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14932349934 + 14932349935.

It is an arithmetic number, because the mean of its divisors is an integer number (14932349935).

Almost surely, 2^29864699869 is an apocalyptic number.

It is an amenable number.

29864699869 is a deficient number, since it is larger than the sum of its proper divisors (1).

29864699869 is an equidigital number, since it uses as much as digits as its factorization.

29864699869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725594112, while the sum is 76.

The spelling of 29864699869 in words is "twenty-nine billion, eight hundred sixty-four million, six hundred ninety-nine thousand, eight hundred sixty-nine".