999995140 has 12 divisors (see below), whose sum is σ = 2099989836. Its totient is φ = 399998048.

The previous prime is 999995111. The next prime is 999995141. The reversal of 999995140 is 41599999.

It can be written as a sum of positive squares in 2 ways, for example, as 325658116 + 674337024 = 18046^2 + 25968^2 .

It is not an unprimeable number, because it can be changed into a prime (999995141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24999859 + ... + 24999898.

It is an arithmetic number, because the mean of its divisors is an integer number (174999153).

Almost surely, 2^999995140 is an apocalyptic number.

It is an amenable number.

999995140 is an abundant number, since it is smaller than the sum of its proper divisors (1099994696).

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

999995140 is a wasteful number, since it uses less digits than its factorization.

999995140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49999766 (or 49999764 counting only the distinct ones).

The product of its (nonzero) digits is 1180980, while the sum is 55.

The square root of 999995140 is about 31622.6997582433. The cubic root of 999995140 is about 999.9983799974.

The spelling of 999995140 in words is "nine hundred ninety-nine million, nine hundred ninety-five thousand, one hundred forty".