148261439 has 4 divisors (see below), whose sum is σ = 148352256. Its totient is φ = 148170624.

The previous prime is 148261411. The next prime is 148261457. The reversal of 148261439 is 934162841.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148261439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148261469) 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, 42914 + ... + 46239.

It is an arithmetic number, because the mean of its divisors is an integer number (37088064).

Almost surely, 2^148261439 is an apocalyptic number.

148261439 is a deficient number, since it is larger than the sum of its proper divisors (90817).

148261439 is an equidigital number, since it uses as much as digits as its factorization.

148261439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90816.

The product of its digits is 41472, while the sum is 38.

The square root of 148261439 is about 12176.2653962535. The cubic root of 148261439 is about 529.2685281359.

The spelling of 148261439 in words is "one hundred forty-eight million, two hundred sixty-one thousand, four hundred thirty-nine".