147991727 has 16 divisors (see below), whose sum is σ = 166992000. Its totient is φ = 130201344.

The previous prime is 147991709. The next prime is 147991733. The reversal of 147991727 is 727199741.

It is a happy number.

147991727 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 147991727 - 2⁸ = 147991471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147991787) 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, 27299 + ... + 32267.

It is an arithmetic number, because the mean of its divisors is an integer number (10437000).

Almost surely, 2^147991727 is an apocalyptic number.

147991727 is a deficient number, since it is larger than the sum of its proper divisors (19000273).

147991727 is a wasteful number, since it uses less digits than its factorization.

147991727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5090.

The product of its digits is 222264, while the sum is 47.

The square root of 147991727 is about 12165.1850376392. The cubic root of 147991727 is about 528.9473910873.

The spelling of 147991727 in words is "one hundred forty-seven million, nine hundred ninety-one thousand, seven hundred twenty-seven".