29673989 has 16 divisors (see below), whose sum is σ = 31648320. Its totient is φ = 27780480.

The previous prime is 29673983. The next prime is 29673997. The reversal of 29673989 is 98937692.

It is a cyclic number.

It is not a de Polignac number, because 29673989 - 2⁸ = 29673733 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 29673989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29673983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226454 + ... + 226584.

It is an arithmetic number, because the mean of its divisors is an integer number (1978020).

Almost surely, 2^29673989 is an apocalyptic number.

29673989 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

29673989 is a deficient number, since it is larger than the sum of its proper divisors (1974331).

29673989 is a wasteful number, since it uses less digits than its factorization.

29673989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340.

The product of its digits is 1469664, while the sum is 53.

The square root of 29673989 is about 5447.3836839349. The cubic root of 29673989 is about 309.5936020429.

The spelling of 29673989 in words is "twenty-nine million, six hundred seventy-three thousand, nine hundred eighty-nine".