29670939 has 6 divisors (see below), whose sum is σ = 42858036. Its totient is φ = 19780620.

The previous prime is 29670931. The next prime is 29670947. The reversal of 29670939 is 93907692.

It is an interprime number because it is at equal distance from previous prime (29670931) and next prime (29670947).

It is not a de Polignac number, because 29670939 - 2³ = 29670931 is a prime.

It is a super-2 number, since 2×29670939² = 1760729242283442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 29670894 and 29670903.

It is not an unprimeable number, because it can be changed into a prime (29670931) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1648377 + ... + 1648394.

It is an arithmetic number, because the mean of its divisors is an integer number (7143006).

Almost surely, 2^29670939 is an apocalyptic number.

29670939 is a deficient number, since it is larger than the sum of its proper divisors (13187097).

29670939 is a wasteful number, since it uses less digits than its factorization.

29670939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3296777 (or 3296774 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The square root of 29670939 is about 5447.1037258345. The cubic root of 29670939 is about 309.5829946291.

The spelling of 29670939 in words is "twenty-nine million, six hundred seventy thousand, nine hundred thirty-nine".