29229661 has 4 divisors (see below), whose sum is σ = 29254972. Its totient is φ = 29204352.

The previous prime is 29229643. The next prime is 29229677. The reversal of 29229661 is 16692292.

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 10791225 + 18438436 = 3285^2 + 4294^2 .

It is a cyclic number.

It is not a de Polignac number, because 29229661 - 2¹³ = 29221469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29229661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29229601) 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, 10836 + ... + 13261.

It is an arithmetic number, because the mean of its divisors is an integer number (7313743).

Almost surely, 2^29229661 is an apocalyptic number.

It is an amenable number.

29229661 is a deficient number, since it is larger than the sum of its proper divisors (25311).

29229661 is a wasteful number, since it uses less digits than its factorization.

29229661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25310.

The product of its digits is 23328, while the sum is 37.

The square root of 29229661 is about 5406.4462449931. The cubic root of 29229661 is about 308.0405755562.

It can be divided in two parts, 29229 and 661, that added together give a triangular number (29890 = T₂₄₄).

The spelling of 29229661 in words is "twenty-nine million, two hundred twenty-nine thousand, six hundred sixty-one".