990658134 has 32 divisors (see below), whose sum is σ = 2272481280. Its totient is φ = 319566600.

The previous prime is 990658133. The next prime is 990658169. The reversal of 990658134 is 431856099.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 990658134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990658133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 294222 + ... + 297569.

It is an arithmetic number, because the mean of its divisors is an integer number (71015040).

Almost surely, 2^990658134 is an apocalyptic number.

990658134 is an abundant number, since it is smaller than the sum of its proper divisors (1281823146).

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

990658134 is a wasteful number, since it uses less digits than its factorization.

990658134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591833 (or 591827 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 990658134 is about 31474.7221433327. The cubic root of 990658134 is about 996.8762973080.

The spelling of 990658134 in words is "nine hundred ninety million, six hundred fifty-eight thousand, one hundred thirty-four".