29490879457 has 8 divisors (see below), whose sum is σ = 31898099240. Its totient is φ = 27103472640.

The previous prime is 29490879401. The next prime is 29490879493. The reversal of 29490879457 is 75497809492.

It can be written as a sum of positive squares in 4 ways, for example, as 13467370401 + 16023509056 = 116049^2 + 126584^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 29490879457 - 2³¹ = 27343395809 is a prime.

It is a super-2 number, since 2×29490879457² (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 (29490879497) 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, 4950144 + ... + 4956097.

It is an arithmetic number, because the mean of its divisors is an integer number (3987262405).

Almost surely, 2^29490879457 is an apocalyptic number.

It is an amenable number.

29490879457 is a deficient number, since it is larger than the sum of its proper divisors (2407219783).

29490879457 is a wasteful number, since it uses less digits than its factorization.

29490879457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9906483.

The product of its (nonzero) digits is 45722880, while the sum is 64.

The spelling of 29490879457 in words is "twenty-nine billion, four hundred ninety million, eight hundred seventy-nine thousand, four hundred fifty-seven".