29977129 has 8 divisors (see below), whose sum is σ = 36895040. Its totient is φ = 23718096.

The previous prime is 29977127. The next prime is 29977139. The reversal of 29977129 is 92177992.

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 29977129 - 2¹ = 29977127 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29977121) 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, 164619 + ... + 164800.

It is an arithmetic number, because the mean of its divisors is an integer number (4611880).

Almost surely, 2^29977129 is an apocalyptic number.

It is an amenable number.

29977129 is a deficient number, since it is larger than the sum of its proper divisors (6917911).

29977129 is a wasteful number, since it uses less digits than its factorization.

29977129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329439.

The product of its digits is 142884, while the sum is 46.

The square root of 29977129 is about 5475.1373498753. The cubic root of 29977129 is about 310.6442688380.

The spelling of 29977129 in words is "twenty-nine million, nine hundred seventy-seven thousand, one hundred twenty-nine".