148438989 has 6 divisors (see below), whose sum is σ = 214411886. Its totient is φ = 98959320.

The previous prime is 148438957. The next prime is 148438991. The reversal of 148438989 is 989834841.

148438989 is a `hidden beast` number, since 1 + 484 + 3 + 89 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 136118889 + 12320100 = 11667^2 + 3510^2 .

It is not a de Polignac number, because 148438989 - 2⁵ = 148438957 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 (148438949) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8246602 + ... + 8246619.

Almost surely, 2^148438989 is an apocalyptic number.

It is an amenable number.

148438989 is a deficient number, since it is larger than the sum of its proper divisors (65972897).

148438989 is a wasteful number, since it uses less digits than its factorization.

148438989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16493227 (or 16493224 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 148438989 is about 12183.5540381286. The cubic root of 148438989 is about 529.4797184516.

It can be divided in two parts, 14843 and 8989, that added together give a palindrome (23832).

The spelling of 148438989 in words is "one hundred forty-eight million, four hundred thirty-eight thousand, nine hundred eighty-nine".