990315842 has 8 divisors (see below), whose sum is σ = 1490956032. Its totient is φ = 493330500.

The previous prime is 990315827. The next prime is 990315847. The reversal of 990315842 is 248513099.

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

It is a self number, because there is not a number n which added to its sum of digits gives 990315842.

It is not an unprimeable number, because it can be changed into a prime (990315847) 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, 913034 + ... + 914117.

It is an arithmetic number, because the mean of its divisors is an integer number (186369504).

Almost surely, 2^990315842 is an apocalyptic number.

990315842 is a deficient number, since it is larger than the sum of its proper divisors (500640190).

990315842 is a wasteful number, since it uses less digits than its factorization.

990315842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827424.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 990315842 is about 31469.2841037098. The cubic root of 990315842 is about 996.7614705825.

The spelling of 990315842 in words is "nine hundred ninety million, three hundred fifteen thousand, eight hundred forty-two".