29618989 has 8 divisors (see below), whose sum is σ = 30139200. Its totient is φ = 29103456.

The previous prime is 29618987. The next prime is 29619001. The reversal of 29618989 is 98981692.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 29618989 - 2¹ = 29618987 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29618983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13062 + ... + 15160.

It is an arithmetic number, because the mean of its divisors is an integer number (3767400).

Almost surely, 2^29618989 is an apocalyptic number.

It is an amenable number.

29618989 is a deficient number, since it is larger than the sum of its proper divisors (520211).

29618989 is a wasteful number, since it uses less digits than its factorization.

29618989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339.

The product of its digits is 559872, while the sum is 52.

The square root of 29618989 is about 5442.3330475082. Note that the first 3 decimals coincide. The cubic root of 29618989 is about 309.4022090683.

The spelling of 29618989 in words is "twenty-nine million, six hundred eighteen thousand, nine hundred eighty-nine".