147828939 has 4 divisors (see below), whose sum is σ = 197105256. Its totient is φ = 98552624.

The previous prime is 147828937. The next prime is 147828943. The reversal of 147828939 is 939828741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939828741 = 3 ⋅313276247.

It is a cyclic number.

It is not a de Polignac number, because 147828939 - 2¹ = 147828937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 147828891 and 147828900.

It is not an unprimeable number, because it can be changed into a prime (147828937) 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, 24638154 + ... + 24638159.

It is an arithmetic number, because the mean of its divisors is an integer number (49276314).

Almost surely, 2^147828939 is an apocalyptic number.

147828939 is a deficient number, since it is larger than the sum of its proper divisors (49276317).

147828939 is an equidigital number, since it uses as much as digits as its factorization.

147828939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49276316.

The product of its digits is 870912, while the sum is 51.

The square root of 147828939 is about 12158.4924641174. The cubic root of 147828939 is about 528.7533760103.

The spelling of 147828939 in words is "one hundred forty-seven million, eight hundred twenty-eight thousand, nine hundred thirty-nine".