999255134 has 4 divisors (see below), whose sum is σ = 1498882704. Its totient is φ = 499627566.

The previous prime is 999255119. The next prime is 999255137. The reversal of 999255134 is 431552999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 431552999 = 4523 ⋅95413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999255137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249813782 + ... + 249813785.

It is an arithmetic number, because the mean of its divisors is an integer number (374720676).

Almost surely, 2^999255134 is an apocalyptic number.

999255134 is a deficient number, since it is larger than the sum of its proper divisors (499627570).

999255134 is a wasteful number, since it uses less digits than its factorization.

999255134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499627569.

The product of its digits is 437400, while the sum is 47.

The square root of 999255134 is about 31610.9970421687. The cubic root of 999255134 is about 999.7516496605.

The spelling of 999255134 in words is "nine hundred ninety-nine million, two hundred fifty-five thousand, one hundred thirty-four".