29439993 has 16 divisors (see below), whose sum is σ = 43819776. Its totient is φ = 17426640.

The previous prime is 29439989. The next prime is 29440007. The reversal of 29439993 is 39993492.

It is a happy number.

It is not a de Polignac number, because 29439993 - 2² = 29439989 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29439913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8955 + ... + 11792.

It is an arithmetic number, because the mean of its divisors is an integer number (2738736).

Almost surely, 2^29439993 is an apocalyptic number.

It is an amenable number.

29439993 is a deficient number, since it is larger than the sum of its proper divisors (14379783).

29439993 is a wasteful number, since it uses less digits than its factorization.

29439993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20804.

The product of its digits is 472392, while the sum is 48.

The square root of 29439993 is about 5425.8633414416. The cubic root of 29439993 is about 308.7776807016. Note that the first 3 decimals are identical.

It can be divided in two parts, 294399 and 93, that added together give a palindrome (294492).

The spelling of 29439993 in words is "twenty-nine million, four hundred thirty-nine thousand, nine hundred ninety-three".