29689393 has 6 divisors (see below), whose sum is σ = 30397794. Its totient is φ = 28997136.

The previous prime is 29689391. The next prime is 29689403. The reversal of 29689393 is 39398692.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24880144 + 4809249 = 4988^2 + 2193^2 .

It is not a de Polignac number, because 29689393 - 2¹ = 29689391 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 (29689391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6180 + ... + 9877.

It is an arithmetic number, because the mean of its divisors is an integer number (5066299).

Almost surely, 2^29689393 is an apocalyptic number.

It is an amenable number.

29689393 is a deficient number, since it is larger than the sum of its proper divisors (708401).

29689393 is an equidigital number, since it uses as much as digits as its factorization.

29689393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16143 (or 16100 counting only the distinct ones).

The product of its digits is 629856, while the sum is 49.

The square root of 29689393 is about 5448.7973902504. The cubic root of 29689393 is about 309.6471635968.

The spelling of 29689393 in words is "twenty-nine million, six hundred eighty-nine thousand, three hundred ninety-three".