29975997 has 8 divisors (see below), whose sum is σ = 40474240. Its totient is φ = 19730880.

The previous prime is 29975993. The next prime is 29976013. The reversal of 29975997 is 79957992.

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

It is not a de Polignac number, because 29975997 - 2² = 29975993 is a prime.

It is a super-2 number, since 2×29975997² = 1797120792288018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29975993) 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, 63004 + ... + 63477.

It is an arithmetic number, because the mean of its divisors is an integer number (5059280).

Almost surely, 2^29975997 is an apocalyptic number.

It is an amenable number.

29975997 is a deficient number, since it is larger than the sum of its proper divisors (10498243).

29975997 is a wasteful number, since it uses less digits than its factorization.

29975997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126563.

The product of its digits is 3214890, while the sum is 57.

The square root of 29975997 is about 5475.0339724973. The cubic root of 29975997 is about 310.6403585932.

The spelling of 29975997 in words is "twenty-nine million, nine hundred seventy-five thousand, nine hundred ninety-seven".