29870939 has 12 divisors (see below), whose sum is σ = 35558424. Its totient is φ = 25006464.

The previous prime is 29870923. The next prime is 29870941. The reversal of 29870939 is 93907892.

It is not a de Polignac number, because 29870939 - 2⁴ = 29870923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29870893 and 29870902.

It is not an unprimeable number, because it can be changed into a prime (29870969) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4982 + ... + 9195.

It is an arithmetic number, because the mean of its divisors is an integer number (2963202).

Almost surely, 2^29870939 is an apocalyptic number.

29870939 is a deficient number, since it is larger than the sum of its proper divisors (5687485).

29870939 is a wasteful number, since it uses less digits than its factorization.

29870939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14234 (or 14227 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 29870939 is about 5465.4312730104. The cubic root of 29870939 is about 310.2770295025.

The spelling of 29870939 in words is "twenty-nine million, eight hundred seventy thousand, nine hundred thirty-nine".