29489894142 has 16 divisors (see below), whose sum is σ = 60573837072. Its totient is φ = 9564289920.

The previous prime is 29489894099. The next prime is 29489894143. The reversal of 29489894142 is 24149898492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29489894143) 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, 66418459 + ... + 66418902.

It is an arithmetic number, because the mean of its divisors is an integer number (3785864817).

Almost surely, 2^29489894142 is an apocalyptic number.

29489894142 is an abundant number, since it is smaller than the sum of its proper divisors (31083942930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29489894142 is a wasteful number, since it uses less digits than its factorization.

29489894142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132837403.

The product of its digits is 11943936, while the sum is 60.

The spelling of 29489894142 in words is "twenty-nine billion, four hundred eighty-nine million, eight hundred ninety-four thousand, one hundred forty-two".