29893372609 has 9 divisors (see below), whose sum is σ = 30647529961. Its totient is φ = 29157350080.

The previous prime is 29893372601. The next prime is 29893372651. The reversal of 29893372609 is 90627339892.

The square root of 29893372609 is 172897.

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

It can be written as a sum of positive squares in 4 ways, for example, as 422097025 + 29471275584 = 20545^2 + 171672^2 .

It is not a de Polignac number, because 29893372609 - 2³ = 29893372601 is a prime.

It is a super-2 number, since 2×29893372609² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29893372601) 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, 7086669 + ... + 7090885.

Almost surely, 2^29893372609 is an apocalyptic number.

29893372609 is the 172897-th square number.

29893372609 is the 86449-th centered octagonal number.

It is an amenable number.

29893372609 is a deficient number, since it is larger than the sum of its proper divisors (754157352).

29893372609 is an frugal number, since it uses more digits than its factorization.

29893372609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8516 (or 4258 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 58.

The spelling of 29893372609 in words is "twenty-nine billion, eight hundred ninety-three million, three hundred seventy-two thousand, six hundred nine".