29078993 has 4 divisors (see below), whose sum is σ = 30789540. Its totient is φ = 27368448.

The previous prime is 29078983. The next prime is 29079007. The reversal of 29078993 is 39987092.

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 22963264 + 6115729 = 4792^2 + 2473^2 .

It is a cyclic number.

It is not a de Polignac number, because 29078993 - 2¹⁸ = 28816849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (29078953) 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, 855248 + ... + 855281.

It is an arithmetic number, because the mean of its divisors is an integer number (7697385).

Almost surely, 2^29078993 is an apocalyptic number.

It is an amenable number.

29078993 is a deficient number, since it is larger than the sum of its proper divisors (1710547).

29078993 is a wasteful number, since it uses less digits than its factorization.

29078993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710546.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 29078993 is about 5392.4941353700. The cubic root of 29078993 is about 307.5103854425.

The spelling of 29078993 in words is "twenty-nine million, seventy-eight thousand, nine hundred ninety-three".