989754905 has 8 divisors (see below), whose sum is σ = 1212976512. Its totient is φ = 774956848.

The previous prime is 989754901. The next prime is 989754919. The reversal of 989754905 is 509457989.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 989754905 - 2² = 989754901 is a prime.

It is a super-2 number, since 2×989754905² = 1959229543943118050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989754901) 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 7 ways as a sum of consecutive naturals, for example, 2105627 + ... + 2106096.

It is an arithmetic number, because the mean of its divisors is an integer number (151622064).

Almost surely, 2^989754905 is an apocalyptic number.

It is an amenable number.

989754905 is a deficient number, since it is larger than the sum of its proper divisors (223221607).

989754905 is a wasteful number, since it uses less digits than its factorization.

989754905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4211775.

The product of its (nonzero) digits is 4082400, while the sum is 56.

The square root of 989754905 is about 31460.3703887923. The cubic root of 989754905 is about 996.5732390559.

The spelling of 989754905 in words is "nine hundred eighty-nine million, seven hundred fifty-four thousand, nine hundred five".