40409736 has 32 divisors (see below), whose sum is σ = 101544000. Its totient is φ = 13400640.

The previous prime is 40409729. The next prime is 40409753. The reversal of 40409736 is 63790404.

It is a junction number, because it is equal to n+sod(n) for n = 40409697 and 40409706.

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, 546 + ... + 9006.

It is an arithmetic number, because the mean of its divisors is an integer number (3173250).

Almost surely, 2^40409736 is an apocalyptic number.

It is an amenable number.

40409736 is an abundant number, since it is smaller than the sum of its proper divisors (61134264).

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

40409736 is a wasteful number, since it uses less digits than its factorization.

40409736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8669 (or 8665 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 40409736 is about 6356.8652652074. The cubic root of 40409736 is about 343.1589558667.

The spelling of 40409736 in words is "forty million, four hundred nine thousand, seven hundred thirty-six".