148474639 has 4 divisors (see below), whose sum is σ = 148628520. Its totient is φ = 148320760.

The previous prime is 148474631. The next prime is 148474643. The reversal of 148474639 is 936474841.

148474639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 148474639 - 2³ = 148474631 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 (148474631) 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, 75484 + ... + 77425.

It is an arithmetic number, because the mean of its divisors is an integer number (37157130).

Almost surely, 2^148474639 is an apocalyptic number.

148474639 is a deficient number, since it is larger than the sum of its proper divisors (153881).

148474639 is an equidigital number, since it uses as much as digits as its factorization.

148474639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153880.

The product of its digits is 580608, while the sum is 46.

The square root of 148474639 is about 12185.0169880883. The cubic root of 148474639 is about 529.5221027361.

The spelling of 148474639 in words is "one hundred forty-eight million, four hundred seventy-four thousand, six hundred thirty-nine".