29397502849 has 45 divisors (see below), whose sum is σ = 35340055065. Its totient is φ = 24442909920.

The previous prime is 29397502843. The next prime is 29397502903. The reversal of 29397502849 is 94820579392.

The square root of 29397502849 is 171457.

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 1028164225 + 28369338624 = 32065^2 + 168432^2 .

It is not a de Polignac number, because 29397502849 - 2¹³ = 29397494657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29397502793 and 29397502802.

It is not an unprimeable number, because it can be changed into a prime (29397502843) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 269701807 + ... + 269701915.

It is an arithmetic number, because the mean of its divisors is an integer number (785334557).

Almost surely, 2^29397502849 is an apocalyptic number.

29397502849 is the 171457-th square number.

29397502849 is the 85729-th centered octagonal number.

It is an amenable number.

29397502849 is a deficient number, since it is larger than the sum of its proper divisors (5942552216).

29397502849 is an frugal number, since it uses more digits than its factorization.

29397502849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 29397502849 in words is "twenty-nine billion, three hundred ninety-seven million, five hundred two thousand, eight hundred forty-nine".