29137813 has 4 divisors (see below), whose sum is σ = 30851820. Its totient is φ = 27423808.

The previous prime is 29137783. The next prime is 29137817. The reversal of 29137813 is 31873192.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10284849 + 18852964 = 3207^2 + 4342^2 .

It is a cyclic number.

It is not a de Polignac number, because 29137813 - 2⁵ = 29137781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29137817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 856978 + ... + 857011.

It is an arithmetic number, because the mean of its divisors is an integer number (7712955).

Almost surely, 2^29137813 is an apocalyptic number.

It is an amenable number.

29137813 is a deficient number, since it is larger than the sum of its proper divisors (1714007).

29137813 is a wasteful number, since it uses less digits than its factorization.

29137813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714006.

The product of its digits is 9072, while the sum is 34.

The square root of 29137813 is about 5397.9452572252. The cubic root of 29137813 is about 307.7175863222.

The spelling of 29137813 in words is "twenty-nine million, one hundred thirty-seven thousand, eight hundred thirteen".