29081693 has 4 divisors (see below), whose sum is σ = 30084540. Its totient is φ = 28078848.

The previous prime is 29081687. The next prime is 29081737. The reversal of 29081693 is 39618092.

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 21780889 + 7300804 = 4667^2 + 2702^2 .

It is a cyclic number.

It is not a de Polignac number, because 29081693 - 2⁶ = 29081629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29081093) 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, 501380 + ... + 501437.

It is an arithmetic number, because the mean of its divisors is an integer number (7521135).

Almost surely, 2^29081693 is an apocalyptic number.

It is an amenable number.

29081693 is a deficient number, since it is larger than the sum of its proper divisors (1002847).

29081693 is a wasteful number, since it uses less digits than its factorization.

29081693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002846.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 29081693 is about 5392.7444775365. The cubic root of 29081693 is about 307.5199026490.

The spelling of 29081693 in words is "twenty-nine million, eighty-one thousand, six hundred ninety-three".