974986909 has 8 divisors (see below), whose sum is σ = 1051747200. Its totient is φ = 898478256.

The previous prime is 974986897. The next prime is 974986913. The reversal of 974986909 is 909689479.

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

It is a de Polignac number, because none of the positive numbers 2^k-974986909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (974986009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54817 + ... + 70390.

It is an arithmetic number, because the mean of its divisors is an integer number (131468400).

Almost surely, 2^974986909 is an apocalyptic number.

It is an amenable number.

974986909 is a deficient number, since it is larger than the sum of its proper divisors (76760291).

974986909 is a wasteful number, since it uses less digits than its factorization.

974986909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125819.

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

The square root of 974986909 is about 31224.7803675222. The cubic root of 974986909 is about 991.5918033765.

The spelling of 974986909 in words is "nine hundred seventy-four million, nine hundred eighty-six thousand, nine hundred nine".