148278839 has 8 divisors (see below), whose sum is σ = 151292928. Its totient is φ = 145288440.

The previous prime is 148278817. The next prime is 148278857. The reversal of 148278839 is 938872841.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 148278839 - 2²⁰ = 147230263 is a prime.

It is a super-2 number, since 2×148278839² = 43973228190375842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148278899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7004 + ... + 18590.

It is an arithmetic number, because the mean of its divisors is an integer number (18911616).

Almost surely, 2^148278839 is an apocalyptic number.

148278839 is a deficient number, since it is larger than the sum of its proper divisors (3014089).

148278839 is a wasteful number, since it uses less digits than its factorization.

148278839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11845.

The product of its digits is 774144, while the sum is 50.

The square root of 148278839 is about 12176.9798800852. The cubic root of 148278839 is about 529.2892323555.

The spelling of 148278839 in words is "one hundred forty-eight million, two hundred seventy-eight thousand, eight hundred thirty-nine".