899429791090 has 24 divisors (see below), whose sum is σ = 1719809356932. Its totient is φ = 338608861440.

The previous prime is 899429791079. The next prime is 899429791097. The reversal of 899429791090 is 90197924998.

899429791090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 855441859801 + 43987931289 = 924901^2 + 209733^2 .

It is not an unprimeable number, because it can be changed into a prime (899429791097) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155607801 + ... + 155613580.

Almost surely, 2^899429791090 is an apocalyptic number.

899429791090 is a deficient number, since it is larger than the sum of its proper divisors (820379565842).

899429791090 is a wasteful number, since it uses less digits than its factorization.

899429791090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311221422 (or 311221405 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 67.

The spelling of 899429791090 in words is "eight hundred ninety-nine billion, four hundred twenty-nine million, seven hundred ninety-one thousand, ninety".