29189385 has 12 divisors (see below), whose sum is σ = 50595012. Its totient is φ = 15567648.

The previous prime is 29189359. The next prime is 29189431. The reversal of 29189385 is 58398192.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21455424 + 7733961 = 4632^2 + 2781^2 .

It is not a de Polignac number, because 29189385 - 2⁵ = 29189353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 648653 = 29189385 / (2 + 9 + 1 + 8 + 9 + 3 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 29189385.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 324282 + ... + 324371.

It is an arithmetic number, because the mean of its divisors is an integer number (4216251).

Almost surely, 2^29189385 is an apocalyptic number.

It is an amenable number.

29189385 is a deficient number, since it is larger than the sum of its proper divisors (21405627).

29189385 is a wasteful number, since it uses less digits than its factorization.

29189385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648664 (or 648661 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 29189385 is about 5402.7201482216. The cubic root of 29189385 is about 307.8990259042.

It can be divided in two parts, 291 and 89385, that added together give a triangular number (89676 = T₄₂₃).

The spelling of 29189385 in words is "twenty-nine million, one hundred eighty-nine thousand, three hundred eighty-five".