40405324 has 24 divisors (see below), whose sum is σ = 75700800. Its totient is φ = 18812880.

The previous prime is 40405237. The next prime is 40405331. The reversal of 40405324 is 42350404.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40405295 and 40405304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22 + ... + 8989.

It is an arithmetic number, because the mean of its divisors is an integer number (3154200).

Almost surely, 2^40405324 is an apocalyptic number.

It is an amenable number.

40405324 is a deficient number, since it is larger than the sum of its proper divisors (35295476).

40405324 is a wasteful number, since it uses less digits than its factorization.

40405324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9093 (or 9091 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 40405324 is about 6356.5182293454. The cubic root of 40405324 is about 343.1464665298.

Adding to 40405324 its reverse (42350404), we get a palindrome (82755728).

The spelling of 40405324 in words is "forty million, four hundred five thousand, three hundred twenty-four".