29939961 has 8 divisors (see below), whose sum is σ = 39966304. Its totient is φ = 19936800.

The previous prime is 29939957. The next prime is 29939983. The reversal of 29939961 is 16993992.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 29939961 - 2² = 29939957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29939961.

It is not an unprimeable number, because it can be changed into a prime (29939461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2515 + ... + 8136.

It is an arithmetic number, because the mean of its divisors is an integer number (4995788).

Almost surely, 2^29939961 is an apocalyptic number.

It is an amenable number.

29939961 is a deficient number, since it is larger than the sum of its proper divisors (10026343).

29939961 is a wasteful number, since it uses less digits than its factorization.

29939961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11591.

The product of its digits is 236196, while the sum is 48.

The square root of 29939961 is about 5471.7420443585. The cubic root of 29939961 is about 310.5158286822.

The spelling of 29939961 in words is "twenty-nine million, nine hundred thirty-nine thousand, nine hundred sixty-one".