40354340 has 24 divisors (see below), whose sum is σ = 91263480. Its totient is φ = 14899968.

The previous prime is 40354337. The next prime is 40354357. The reversal of 40354340 is 4345304.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2334784 + 38019556 = 1528^2 + 6166^2 .

It is an unprimeable number.

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, 77345 + ... + 77864.

It is an arithmetic number, because the mean of its divisors is an integer number (3802645).

Almost surely, 2^40354340 is an apocalyptic number.

It is an amenable number.

40354340 is an abundant number, since it is smaller than the sum of its proper divisors (50909140).

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

40354340 is a wasteful number, since it uses less digits than its factorization.

40354340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155231 (or 155229 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 40354340 is about 6352.5065918895. The cubic root of 40354340 is about 343.0020767865.

Adding to 40354340 its reverse (4345304), we get a palindrome (44699644).

The spelling of 40354340 in words is "forty million, three hundred fifty-four thousand, three hundred forty".