147954993 has 4 divisors (see below), whose sum is σ = 197273328. Its totient is φ = 98636660.

The previous prime is 147954991. The next prime is 147955007. The reversal of 147954993 is 399459741.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 147954993 - 2¹ = 147954991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (147954991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24659163 + ... + 24659168.

It is an arithmetic number, because the mean of its divisors is an integer number (49318332).

Almost surely, 2^147954993 is an apocalyptic number.

It is an amenable number.

147954993 is a deficient number, since it is larger than the sum of its proper divisors (49318335).

147954993 is an equidigital number, since it uses as much as digits as its factorization.

147954993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49318334.

The product of its digits is 1224720, while the sum is 51.

The square root of 147954993 is about 12163.6751436398. The cubic root of 147954993 is about 528.9036229621.

The spelling of 147954993 in words is "one hundred forty-seven million, nine hundred fifty-four thousand, nine hundred ninety-three".