899999940000001 has 3 divisors (see below), whose sum is σ = 899999970000001. Its totient is φ = 899999910000002.

The previous prime is 899999939999971. The next prime is 899999940000059. The reversal of 899999940000001 is 100000049999998.

The square root of 899999940000001 is 29999999.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-899999940000001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (899999940000061) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 15000000 + ... + 44999998.

Almost surely, 2^{899999940000001} is an apocalyptic number.

899999940000001 is the 29999999-th square number.

899999940000001 is the 15000000-th centered octagonal number.

It is an amenable number.

899999940000001 is a deficient number, since it is larger than the sum of its proper divisors (30000000).

899999940000001 is an frugal number, since it uses more digits than its factorization.

899999940000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59999998 (or 29999999 counting only the distinct ones).

The product of its (nonzero) digits is 17006112, while the sum is 67.

Adding to 899999940000001 its reverse (100000049999998), we get a palindrome (999999989999999).

It can be divided in two parts, 8999999 and 40000001, that added together give a square (49000000 = 7000²).

The spelling of 899999940000001 in words is "eight hundred ninety-nine trillion, nine hundred ninety-nine billion, nine hundred forty million, one", and thus it is an aban number.