145823339 has 4 divisors (see below), whose sum is σ = 150851760. Its totient is φ = 140794920.

The previous prime is 145823329. The next prime is 145823341. The reversal of 145823339 is 933328541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 933328541 = 523 ⋅1784567.

It is a cyclic number.

It is not a de Polignac number, because 145823339 - 2⁴ = 145823323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145823329) 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, 2514167 + ... + 2514224.

It is an arithmetic number, because the mean of its divisors is an integer number (37712940).

Almost surely, 2^145823339 is an apocalyptic number.

145823339 is a deficient number, since it is larger than the sum of its proper divisors (5028421).

145823339 is an equidigital number, since it uses as much as digits as its factorization.

145823339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5028420.

The product of its digits is 77760, while the sum is 38.

The square root of 145823339 is about 12075.7334766879. The cubic root of 145823339 is about 526.3512751865.

The spelling of 145823339 in words is "one hundred forty-five million, eight hundred twenty-three thousand, three hundred thirty-nine".