981872799 has 4 divisors (see below), whose sum is σ = 1309163736. Its totient is φ = 654581864.

The previous prime is 981872777. The next prime is 981872809. The reversal of 981872799 is 997278189.

981872799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 981872799 - 2¹² = 981868703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981872699) 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, 163645464 + ... + 163645469.

It is an arithmetic number, because the mean of its divisors is an integer number (327290934).

Almost surely, 2^981872799 is an apocalyptic number.

981872799 is a deficient number, since it is larger than the sum of its proper divisors (327290937).

981872799 is a wasteful number, since it uses less digits than its factorization.

981872799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327290936.

The product of its digits is 4572288, while the sum is 60.

The square root of 981872799 is about 31334.8495927458. The cubic root of 981872799 is about 993.9207168754.

The spelling of 981872799 in words is "nine hundred eighty-one million, eight hundred seventy-two thousand, seven hundred ninety-nine".