29039905 has 4 divisors (see below), whose sum is σ = 34847892. Its totient is φ = 23231920.

The previous prime is 29039903. The next prime is 29039929. The reversal of 29039905 is 50993092.

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 14470416 + 14569489 = 3804^2 + 3817^2 .

It is not a de Polignac number, because 29039905 - 2¹ = 29039903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29039903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2903986 + ... + 2903995.

It is an arithmetic number, because the mean of its divisors is an integer number (8711973).

Almost surely, 2^29039905 is an apocalyptic number.

It is an amenable number.

29039905 is a deficient number, since it is larger than the sum of its proper divisors (5807987).

29039905 is an equidigital number, since it uses as much as digits as its factorization.

29039905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5807986.

The product of its (nonzero) digits is 21870, while the sum is 37.

The square root of 29039905 is about 5388.8686196641. The cubic root of 29039905 is about 307.3725384440.

The spelling of 29039905 in words is "twenty-nine million, thirty-nine thousand, nine hundred five".