147999138 has 64 divisors (see below), whose sum is σ = 345461760. Its totient is φ = 41400000.

The previous prime is 147999119. The next prime is 147999143. The reversal of 147999138 is 831999741.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 589513 + ... + 589763.

It is an arithmetic number, because the mean of its divisors is an integer number (5397840).

Almost surely, 2^147999138 is an apocalyptic number.

147999138 is an abundant number, since it is smaller than the sum of its proper divisors (197462622).

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

147999138 is a wasteful number, since it uses less digits than its factorization.

147999138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503.

The product of its digits is 489888, while the sum is 51.

The square root of 147999138 is about 12165.4896325631. The cubic root of 147999138 is about 528.9562203279.

The spelling of 147999138 in words is "one hundred forty-seven million, nine hundred ninety-nine thousand, one hundred thirty-eight".