40409148 has 24 divisors (see below), whose sum is σ = 101541328. Its totient is φ = 12433536.

The previous prime is 40409147. The next prime is 40409179. The reversal of 40409148 is 84190404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40409141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129361 + ... + 129672.

Almost surely, 2^40409148 is an apocalyptic number.

It is an amenable number.

40409148 is an abundant number, since it is smaller than the sum of its proper divisors (61132180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40409148 is a wasteful number, since it uses less digits than its factorization.

40409148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259053 (or 259051 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 40409148 is about 6356.8190158286. The cubic root of 40409148 is about 343.1572914291.

The spelling of 40409148 in words is "forty million, four hundred nine thousand, one hundred forty-eight".