40072865 has 8 divisors (see below), whose sum is σ = 54957120. Its totient is φ = 27478512.

The previous prime is 40072853. The next prime is 40072883. The reversal of 40072865 is 56827004.

40072865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40072865 - 2¹⁴ = 40056481 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 572435 + ... + 572504.

It is an arithmetic number, because the mean of its divisors is an integer number (6869640).

Almost surely, 2^40072865 is an apocalyptic number.

It is an amenable number.

40072865 is a deficient number, since it is larger than the sum of its proper divisors (14884255).

40072865 is a wasteful number, since it uses less digits than its factorization.

40072865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144951.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 40072865 is about 6330.3131834057. The cubic root of 40072865 is about 342.2027256974.

Adding to 40072865 its reverse (56827004), we get a palindrome (96899869).

The spelling of 40072865 in words is "forty million, seventy-two thousand, eight hundred sixty-five".