990413771 has 8 divisors (see below), whose sum is σ = 1026892080. Its totient is φ = 954090592.

The previous prime is 990413759. The next prime is 990413773. The reversal of 990413771 is 177314099.

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 990413771 - 2¹⁰ = 990412747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990413773) 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, 25700 + ... + 51393.

It is an arithmetic number, because the mean of its divisors is an integer number (128361510).

Almost surely, 2^990413771 is an apocalyptic number.

990413771 is a deficient number, since it is larger than the sum of its proper divisors (36478309).

990413771 is a wasteful number, since it uses less digits than its factorization.

990413771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77565.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 990413771 is about 31470.8400110324. The cubic root of 990413771 is about 996.7943249618.

The spelling of 990413771 in words is "nine hundred ninety million, four hundred thirteen thousand, seven hundred seventy-one".