990810417 has 8 divisors (see below), whose sum is σ = 1325956480. Its totient is φ = 658102320.

The previous prime is 990810413. The next prime is 990810419. The reversal of 990810417 is 714018099.

It is a happy number.

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

It is not a de Polignac number, because 990810417 - 2² = 990810413 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990810413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 608542 + ... + 610167.

It is an arithmetic number, because the mean of its divisors is an integer number (165744560).

Almost surely, 2^990810417 is an apocalyptic number.

It is an amenable number.

990810417 is a deficient number, since it is larger than the sum of its proper divisors (335146063).

990810417 is a wasteful number, since it uses less digits than its factorization.

990810417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218983.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 990810417 is about 31477.1411821341. The cubic root of 990810417 is about 996.9273743076.

The spelling of 990810417 in words is "nine hundred ninety million, eight hundred ten thousand, four hundred seventeen".