147438839 has 2 divisors, whose sum is σ = 147438840. Its totient is φ = 147438838.

The previous prime is 147438791. The next prime is 147438877. The reversal of 147438839 is 938834741.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 147438839 - 2²⁴ = 130661623 is a prime.

It is a super-2 number, since 2×147438839² = 43476422491335842, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 147438793 and 147438802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147438539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73719419 + 73719420.

It is an arithmetic number, because the mean of its divisors is an integer number (73719420).

Almost surely, 2^147438839 is an apocalyptic number.

147438839 is a deficient number, since it is larger than the sum of its proper divisors (1).

147438839 is an equidigital number, since it uses as much as digits as its factorization.

147438839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 47.

The square root of 147438839 is about 12142.4395818962. The cubic root of 147438839 is about 528.2878641013.

The spelling of 147438839 in words is "one hundred forty-seven million, four hundred thirty-eight thousand, eight hundred thirty-nine".