148479921 has 12 divisors (see below), whose sum is σ = 227087172. Its totient is φ = 93163776.

The previous prime is 148479907. The next prime is 148479967. The reversal of 148479921 is 129974841.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 81649296 + 66830625 = 9036^2 + 8175^2 .

It is not a de Polignac number, because 148479921 - 2¹¹ = 148477873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (148472921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 485076 + ... + 485381.

It is an arithmetic number, because the mean of its divisors is an integer number (18923931).

Almost surely, 2^148479921 is an apocalyptic number.

It is an amenable number.

148479921 is a deficient number, since it is larger than the sum of its proper divisors (78607251).

148479921 is a wasteful number, since it uses less digits than its factorization.

148479921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970480 (or 970477 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 148479921 is about 12185.2337277543. The cubic root of 148479921 is about 529.5283819288.

The spelling of 148479921 in words is "one hundred forty-eight million, four hundred seventy-nine thousand, nine hundred twenty-one".