148639844 has 12 divisors (see below), whose sum is σ = 260234604. Its totient is φ = 74287104.

The previous prime is 148639817. The next prime is 148639847. The reversal of 148639844 is 448936841.

It can be written as a sum of positive squares in 2 ways, for example, as 77440000 + 71199844 = 8800^2 + 8438^2 .

It is not an unprimeable number, because it can be changed into a prime (148639847) 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, 4004 + ... + 17700.

It is an arithmetic number, because the mean of its divisors is an integer number (21686217).

Almost surely, 2^148639844 is an apocalyptic number.

It is an amenable number.

148639844 is a deficient number, since it is larger than the sum of its proper divisors (111594760).

148639844 is a wasteful number, since it uses less digits than its factorization.

148639844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16414 (or 16412 counting only the distinct ones).

The product of its digits is 663552, while the sum is 47.

The square root of 148639844 is about 12191.7941255584. The cubic root of 148639844 is about 529.7184264404.

The spelling of 148639844 in words is "one hundred forty-eight million, six hundred thirty-nine thousand, eight hundred forty-four".