29931941 has 8 divisors (see below), whose sum is σ = 32423160. Its totient is φ = 27467712.

The previous prime is 29931887. The next prime is 29931943. The reversal of 29931941 is 14913992.

It can be written as a sum of positive squares in 4 ways, for example, as 229441 + 29702500 = 479^2 + 5450^2 .

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 29931941 - 2²² = 25737637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29931895 and 29931904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29931943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4406 + ... + 8903.

It is an arithmetic number, because the mean of its divisors is an integer number (4052895).

Almost surely, 2^29931941 is an apocalyptic number.

It is an amenable number.

29931941 is a deficient number, since it is larger than the sum of its proper divisors (2491219).

29931941 is a wasteful number, since it uses less digits than its factorization.

29931941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13495.

The product of its digits is 17496, while the sum is 38.

The square root of 29931941 is about 5471.0091390894. The cubic root of 29931941 is about 310.4881003078.

The spelling of 29931941 in words is "twenty-nine million, nine hundred thirty-one thousand, nine hundred forty-one".