29879945 has 8 divisors (see below), whose sum is σ = 35921544. Its totient is φ = 23860224.

The previous prime is 29879891. The next prime is 29879957. The reversal of 29879945 is 54997892.

It can be written as a sum of positive squares in 4 ways, for example, as 11587216 + 18292729 = 3404^2 + 4277^2 .

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 29879945 - 2¹² = 29875849 is a prime.

It is a super-2 number, since 2×29879945² = 1785622226406050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2294 + ... + 8063.

It is an arithmetic number, because the mean of its divisors is an integer number (4490193).

Almost surely, 2^29879945 is an apocalyptic number.

It is an amenable number.

29879945 is a deficient number, since it is larger than the sum of its proper divisors (6041599).

29879945 is a wasteful number, since it uses less digits than its factorization.

29879945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10939.

The product of its digits is 1632960, while the sum is 53.

The square root of 29879945 is about 5466.2551166223. The cubic root of 29879945 is about 310.3082089056.

The spelling of 29879945 in words is "twenty-nine million, eight hundred seventy-nine thousand, nine hundred forty-five".