999620027908 has 12 divisors (see below), whose sum is σ = 1749386188060. Its totient is φ = 499795402752.

The previous prime is 999620027897. The next prime is 999620027909. The reversal of 999620027908 is 809720026999.

It can be written as a sum of positive squares in 2 ways, for example, as 853365793284 + 146254234624 = 923778^2 + 382432^2 .

It is not an unprimeable number, because it can be changed into a prime (999620027909) 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, 3498141 + ... + 3773092.

Almost surely, 2^999620027908 is an apocalyptic number.

It is an amenable number.

999620027908 is a deficient number, since it is larger than the sum of its proper divisors (749766160152).

999620027908 is a wasteful number, since it uses less digits than its factorization.

999620027908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7305606 (or 7305604 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 61.

The spelling of 999620027908 in words is "nine hundred ninety-nine billion, six hundred twenty million, twenty-seven thousand, nine hundred eight".