29678969 has 4 divisors (see below), whose sum is σ = 31241040. Its totient is φ = 28116900.

The previous prime is 29678963. The next prime is 29678981. The reversal of 29678969 is 96987692.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29678969 - 2⁸ = 29678713 is a prime.

It is a super-2 number, since 2×29678969² = 1761682401805922, which contains 22 as substring.

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

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (29678963) 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, 781007 + ... + 781044.

It is an arithmetic number, because the mean of its divisors is an integer number (7810260).

Almost surely, 2^29678969 is an apocalyptic number.

It is an amenable number.

29678969 is a deficient number, since it is larger than the sum of its proper divisors (1562071).

29678969 is a wasteful number, since it uses less digits than its factorization.

29678969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562070.

The product of its digits is 2939328, while the sum is 56.

The square root of 29678969 is about 5447.8407649270. The cubic root of 29678969 is about 309.6109201269.

The spelling of 29678969 in words is "twenty-nine million, six hundred seventy-eight thousand, nine hundred sixty-nine".