990717379 has 4 divisors (see below), whose sum is σ = 994862880. Its totient is φ = 986571880.

The previous prime is 990717359. The next prime is 990717389. The reversal of 990717379 is 973717099.

990717379 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 a de Polignac number, because none of the positive numbers 2^k-990717379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990717319) 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, 2072392 + ... + 2072869.

It is an arithmetic number, because the mean of its divisors is an integer number (248715720).

Almost surely, 2^990717379 is an apocalyptic number.

990717379 is a deficient number, since it is larger than the sum of its proper divisors (4145501).

990717379 is a wasteful number, since it uses less digits than its factorization.

990717379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4145500.

The product of its (nonzero) digits is 750141, while the sum is 52.

The square root of 990717379 is about 31475.6632813353. The cubic root of 990717379 is about 996.8961692016.

The spelling of 990717379 in words is "nine hundred ninety million, seven hundred seventeen thousand, three hundred seventy-nine".