40089736 has 24 divisors (see below), whose sum is σ = 78586830. Its totient is φ = 19171328.

The previous prime is 40089719. The next prime is 40089737. The reversal of 40089736 is 63798004.

It can be written as a sum of positive squares in only one way, i.e., 23328900 + 16760836 = 4830^2 + 4094^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40089695 and 40089704.

It is not an unprimeable number, because it can be changed into a prime (40089737) 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 5 ways as a sum of consecutive naturals, for example, 505 + ... + 8968.

Almost surely, 2^40089736 is an apocalyptic number.

40089736 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

40089736 is a deficient number, since it is larger than the sum of its proper divisors (38497094).

40089736 is a wasteful number, since it uses less digits than its factorization.

40089736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9525 (or 9498 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 40089736 is about 6331.6455996842. The cubic root of 40089736 is about 342.2507423306.

The spelling of 40089736 in words is "forty million, eighty-nine thousand, seven hundred thirty-six".