29983346649 has 9 divisors (see below), whose sum is σ = 43310028853. Its totient is φ = 19988551452.

The previous prime is 29983346623. The next prime is 29983346681. The reversal of 29983346649 is 94664338992.

The square root of 29983346649 is 173157.

It is a perfect power (a square), and thus also a powerful number.

29983346649 is a `hidden beast` number, since 2 + 99 + 83 + 3 + 466 + 4 + 9 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 29983346649 - 2²¹ = 29981249497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29983345649) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 490612 + ... + 548330.

Almost surely, 2^29983346649 is an apocalyptic number.

29983346649 is the 173157-th square number.

29983346649 is the 86579-th centered octagonal number.

It is an amenable number.

29983346649 is a deficient number, since it is larger than the sum of its proper divisors (13326682204).

29983346649 is an frugal number, since it uses more digits than its factorization.

29983346649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115444 (or 57722 counting only the distinct ones).

The product of its digits is 60466176, while the sum is 63.

The spelling of 29983346649 in words is "twenty-nine billion, nine hundred eighty-three million, three hundred forty-six thousand, six hundred forty-nine".