148409473 has 8 divisors (see below), whose sum is σ = 157957128. Its totient is φ = 138952704.

The previous prime is 148409467. The next prime is 148409491. The reversal of 148409473 is 374904841.

It can be written as a sum of positive squares in 4 ways, for example, as 64192144 + 84217329 = 8012^2 + 9177^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 148409473 - 2²¹ = 146312321 is a prime.

It is a super-2 number, since 2×148409473² = 44050743352275458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148409453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19336 + ... + 25897.

It is an arithmetic number, because the mean of its divisors is an integer number (19744641).

Almost surely, 2^148409473 is an apocalyptic number.

It is an amenable number.

148409473 is a deficient number, since it is larger than the sum of its proper divisors (9547655).

148409473 is a wasteful number, since it uses less digits than its factorization.

148409473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45443.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 148409473 is about 12182.3426729016. The cubic root of 148409473 is about 529.4446217441. Note that the first 3 decimals are identical.

The spelling of 148409473 in words is "one hundred forty-eight million, four hundred nine thousand, four hundred seventy-three".