990158359 has 2 divisors, whose sum is σ = 990158360. Its totient is φ = 990158358.

The previous prime is 990158357. The next prime is 990158363. The reversal of 990158359 is 953851099.

It is a happy number.

990158359 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (953851099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 990158359 - 2¹ = 990158357 is a prime.

Together with 990158357, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (990158357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495079179 + 495079180.

It is an arithmetic number, because the mean of its divisors is an integer number (495079180).

Almost surely, 2^990158359 is an apocalyptic number.

990158359 is a deficient number, since it is larger than the sum of its proper divisors (1).

990158359 is an equidigital number, since it uses as much as digits as its factorization.

990158359 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 437400, while the sum is 49.

The square root of 990158359 is about 31466.7818341819. The cubic root of 990158359 is about 996.7086317805.

The spelling of 990158359 in words is "nine hundred ninety million, one hundred fifty-eight thousand, three hundred fifty-nine".