990817416 has 24 divisors (see below), whose sum is σ = 2683464030. Its totient is φ = 330272448.

The previous prime is 990817411. The next prime is 990817427. The reversal of 990817416 is 614718099.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 938196900 + 52620516 = 30630^2 + 7254^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (990817411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6880605 + ... + 6880748.

Almost surely, 2^990817416 is an apocalyptic number.

It is an amenable number.

990817416 is an abundant number, since it is smaller than the sum of its proper divisors (1692646614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

990817416 is a wasteful number, since it uses less digits than its factorization.

990817416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13761365 (or 13761358 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 990817416 is about 31477.2523578536. The cubic root of 990817416 is about 996.9297217053.

The spelling of 990817416 in words is "nine hundred ninety million, eight hundred seventeen thousand, four hundred sixteen".