29939457 has 4 divisors (see below), whose sum is σ = 39919280. Its totient is φ = 19959636.

The previous prime is 29939453. The next prime is 29939461. The reversal of 29939457 is 75493992.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (29939453) and next prime (29939461).

It is not a de Polignac number, because 29939457 - 2² = 29939453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29939453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4989907 + ... + 4989912.

It is an arithmetic number, because the mean of its divisors is an integer number (9979820).

Almost surely, 2^29939457 is an apocalyptic number.

It is an amenable number.

29939457 is a deficient number, since it is larger than the sum of its proper divisors (9979823).

29939457 is an equidigital number, since it uses as much as digits as its factorization.

29939457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9979822.

The product of its digits is 612360, while the sum is 48.

The square root of 29939457 is about 5471.6959893620. The cubic root of 29939457 is about 310.5140862967.

The spelling of 29939457 in words is "twenty-nine million, nine hundred thirty-nine thousand, four hundred fifty-seven".