29859839998 has 16 divisors (see below), whose sum is σ = 44904075264. Its totient is φ = 14891861880.

The previous prime is 29859839993. The next prime is 29859840037. The reversal of 29859839998 is 89993895892.

It is a happy number.

It is a super-2 number, since 2×29859839998² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29859839993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1360911 + ... + 1382677.

It is an arithmetic number, because the mean of its divisors is an integer number (2806504704).

Almost surely, 2^29859839998 is an apocalyptic number.

29859839998 is a deficient number, since it is larger than the sum of its proper divisors (15044235266).

29859839998 is a wasteful number, since it uses less digits than its factorization.

29859839998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23487.

The product of its digits is 906992640, while the sum is 79.

The spelling of 29859839998 in words is "twenty-nine billion, eight hundred fifty-nine million, eight hundred thirty-nine thousand, nine hundred ninety-eight".