200129977 has 4 divisors (see below), whose sum is σ = 200868736. Its totient is φ = 199391220.

The previous prime is 200129971. The next prime is 200129987. The reversal of 200129977 is 779921002.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200129977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200129971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368973 + ... + 369514.

It is an arithmetic number, because the mean of its divisors is an integer number (50217184).

Almost surely, 2^200129977 is an apocalyptic number.

It is an amenable number.

200129977 is a deficient number, since it is larger than the sum of its proper divisors (738759).

200129977 is an equidigital number, since it uses as much as digits as its factorization.

200129977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738758.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 200129977 is about 14146.7302582611. The cubic root of 200129977 is about 584.9302052268.

The spelling of 200129977 in words is "two hundred million, one hundred twenty-nine thousand, nine hundred seventy-seven".