148172439 has 4 divisors (see below), whose sum is σ = 197563256. Its totient is φ = 98781624.

The previous prime is 148172419. The next prime is 148172449. The reversal of 148172439 is 934271841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 934271841 = 3 ⋅311423947.

It is not a de Polignac number, because 148172439 - 2¹⁵ = 148139671 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 148172397 and 148172406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148172419) 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, 24695404 + ... + 24695409.

It is an arithmetic number, because the mean of its divisors is an integer number (49390814).

Almost surely, 2^148172439 is an apocalyptic number.

148172439 is a deficient number, since it is larger than the sum of its proper divisors (49390817).

148172439 is an equidigital number, since it uses as much as digits as its factorization.

148172439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49390816.

The product of its digits is 48384, while the sum is 39.

The square root of 148172439 is about 12172.6101966669. The cubic root of 148172439 is about 529.1626019018.

It can be divided in two parts, 1481 and 72439, that added together give a triangular number (73920 = T₃₈₄).

The spelling of 148172439 in words is "one hundred forty-eight million, one hundred seventy-two thousand, four hundred thirty-nine".