990357263 has 8 divisors (see below), whose sum is σ = 1132105632. Its totient is φ = 848676096.

The previous prime is 990357259. The next prime is 990357301. The reversal of 990357263 is 362753099.

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 990357263 - 2² = 990357259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990327263) 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, 20231 + ... + 48887.

It is an arithmetic number, because the mean of its divisors is an integer number (141513204).

Almost surely, 2^990357263 is an apocalyptic number.

990357263 is a deficient number, since it is larger than the sum of its proper divisors (141748369).

990357263 is a wasteful number, since it uses less digits than its factorization.

990357263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33601.

The product of its (nonzero) digits is 306180, while the sum is 44.

The square root of 990357263 is about 31469.9422147547. The cubic root of 990357263 is about 996.7753672538.

The spelling of 990357263 in words is "nine hundred ninety million, three hundred fifty-seven thousand, two hundred sixty-three".