29972969 has 4 divisors (see below), whose sum is σ = 32278596. Its totient is φ = 27667344.

The previous prime is 29972951. The next prime is 29972977. The reversal of 29972969 is 96927992.

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 1755625 + 28217344 = 1325^2 + 5312^2 .

It is a cyclic number.

It is not a de Polignac number, because 29972969 - 2²⁴ = 13195753 is a prime.

It is a super-2 number, since 2×29972969² = 1796757741349922, which contains 22 as substring.

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 29972969.

It is not an unprimeable number, because it can be changed into a prime (29972069) 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, 1152794 + ... + 1152819.

It is an arithmetic number, because the mean of its divisors is an integer number (8069649).

Almost surely, 2^29972969 is an apocalyptic number.

It is an amenable number.

29972969 is a deficient number, since it is larger than the sum of its proper divisors (2305627).

29972969 is a wasteful number, since it uses less digits than its factorization.

29972969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305626.

The product of its digits is 1102248, while the sum is 53.

The square root of 29972969 is about 5474.7574375492. The cubic root of 29972969 is about 310.6298985499.

The spelling of 29972969 in words is "twenty-nine million, nine hundred seventy-two thousand, nine hundred sixty-nine".