29140689 has 4 divisors (see below), whose sum is σ = 38854256. Its totient is φ = 19427124.

The previous prime is 29140673. The next prime is 29140691. The reversal of 29140689 is 98604192.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 29140689 - 2⁴ = 29140673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29140649) 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, 4856779 + ... + 4856784.

It is an arithmetic number, because the mean of its divisors is an integer number (9713564).

Almost surely, 2^29140689 is an apocalyptic number.

It is an amenable number.

29140689 is a deficient number, since it is larger than the sum of its proper divisors (9713567).

29140689 is an equidigital number, since it uses as much as digits as its factorization.

29140689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9713566.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 29140689 is about 5398.2116483147. The cubic root of 29140689 is about 307.7277102422.

The spelling of 29140689 in words is "twenty-nine million, one hundred forty thousand, six hundred eighty-nine".