629988900987 has 4 divisors (see below), whose sum is σ = 839985201320. Its totient is φ = 419992600656.

The previous prime is 629988900973. The next prime is 629988901013. The reversal of 629988900987 is 789009889926.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 629988900987 - 2¹⁵ = 629988868219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (629988900967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104998150162 + ... + 104998150167.

It is an arithmetic number, because the mean of its divisors is an integer number (209996300330).

Almost surely, 2^629988900987 is an apocalyptic number.

629988900987 is a deficient number, since it is larger than the sum of its proper divisors (209996300333).

629988900987 is a wasteful number, since it uses less digits than its factorization.

629988900987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209996300332.

The product of its (nonzero) digits is 282175488, while the sum is 75.

The spelling of 629988900987 in words is "six hundred twenty-nine billion, nine hundred eighty-eight million, nine hundred thousand, nine hundred eighty-seven".